# Safe Handling of Microbial Cultures: A Biosafety Guide Every culture plate, broth tube, and frozen stock in a microbiology laboratory contains a living organism that can colonize, infect, or contaminate. Safe handling of microbial cultures is the set of practices that keeps those organisms inside their containers and away from the people who work with them. Done well, it protects staff from laboratory-acquired infections, protects specimens from cross-contamination, and protects the community from accidental release of pathogens. This guide explains how to handle bacterial, fungal, and viral cultures safely at the bench. It covers how to perform a biosafety risk assessment before you touch a culture, how to choose the right containment level, how to work in a biosafety cabinet, how to decontaminate and dispose of cultures, and how to respond when something goes wrong. It is written for laboratory scientists, students in [clinical microbiology](/knowledge/diagnostics/microbiology/clinical-microbiology-from-specimen-collection-to-pathogen-identification) rotations, and supervisors who must verify that their staff follow correct practice. For timing, plan on 30 to 60 minutes to complete a written biosafety risk assessment for a new culture procedure. A typical working session with live cultures requires about 15 minutes of setup (personal protective equipment, cabinet preparation, disinfectant) before any manipulation, and 10 to 15 minutes of decontamination and waste handling afterward. Training to competency in basic culture handling generally takes weeks of supervised bench work, not a single session. ## The Principle Behind Safe Culture Handling Biosafety rests on a simple model: hazard times exposure equals risk. You cannot always change the hazard (an organism's virulence is what it is), but you can nearly always reduce exposure. Exposure happens through five routes: inhalation of aerosols, ingestion from hand-to-mouth transfer, percutaneous inoculation from needles or broken glass, direct contact with mucous membranes, and, less often, animal bites in research settings. Three layers of protection work together. Engineering controls (biosafety cabinets, sharps containers, autoclaves) remove the hazard from the worker's immediate space. Administrative controls (risk assessment, standard operating procedures, training, restricted access) control how work is organized. Personal protective equipment (PPE) is the last barrier and the one most dependent on individual behavior. A laboratory that relies on gloves and gowns while ignoring aerosol-generating practices has inverted the model, and its staff will eventually pay for it. Laboratory-acquired infections are not historical curiosities. A systematic review of the Middle East and North Africa region documented 24 reported laboratory-acquired infection cases between 1968 and 2016, with Brucella melitensis the most frequently reported agent, and the review identified persistent gaps in biosafety practice behind those cases [1]. Brucella is a classic culprit because it is highly infectious by the aerosol route at very low inocula, and because unrecognized cultures of Brucella are routinely processed on open benches before identification. The lesson generalizes: the most dangerous moment in culture handling is often the moment you do not yet know what you are holding. ## Biosafety Risk Assessment: The First Step A biosafety risk assessment is a structured, written evaluation of what organism you are working with, what you will do to it, and what could go wrong. It is performed before starting a new procedure, when introducing a new agent, when equipment or staffing changes, and after any incident. Every competent [biosafety program](/knowledge/diagnostics/emerging-tech/biosafety-program-implementation-a-roadmap-for-diagnostic-laboratories) treats the risk assessment as the foundation of safe handling, because containment decisions flow directly from it [2]. A workable risk assessment answers five questions in writing. 1. **What is the agent?** Identify the organism to the species level if possible, including any toxin genes, spore-forming capacity, or resistance traits. Uncertainty raises the required precaution level. When identity is unknown, handle the specimen at the containment level appropriate for the most likely suspected agents. 2. **What is the hazard?** Consider virulence, infectious dose, route of infection, availability of prophylaxis or treatment, and whether the agent is a select agent subject to special regulatory control. For example, Burkholderia pseudomallei, the cause of melioidosis, is classified as a tier 1 select agent in the United States, and international guidelines recommend handling its isolates in a Class II biosafety cabinet within a [Biosafety Level](/knowledge/diagnostics/emerging-tech/biosafety-levels-1-4-a-comparative-framework-for-diagnostic-laboratory-design) 3 facility because of documented laboratory-acquired melioidosis [3]. 3. **What manipulations will occur?** Each procedure carries a different aerosol potential. Reading an agar plate generates almost no aerosol. Making a McFarland suspension, vortexing, centrifuging, snap-opening containers, grinding, sonication, and using a hot loop on a heavy inoculum all generate substantial aerosols. 4. **Who is exposed and what is their competency?** Training level, prior experience, immunocompromise, and pregnancy all modify individual risk. 5. **What reduces the risk to an acceptable level?** Assign the containment level, engineering controls, PPE, and any procedure modifications, and write them into the standard operating procedure. The principle of precaution should tilt uncertain calls toward more containment, not less. A published evaluation of routine handling of B. pseudomallei outside a biosafety cabinet, involving 30 laboratory scientists across 1,267 handling occasions with no infections and no detected aerosolization in 78 controlled air-sampling events, concluded that risk was low but still did not recommend abandoning cabinet use, precisely because guideline recommendations for a tier 1 select agent rest on conservative precaution rather than single-study convenience [3]. That is the correct reading of risk data: low measured risk under controlled conditions does not license relaxed practice. ## Containment Levels and the Laboratory Environment ![Decision path asking if the agent is known, if manipulations create aerosols, and if it is a select agent, ending in cabinet work at BSL-3.](/article-images/illustrations/safe-handling-of-microbial-cultures-biosafety-containment-triage.webp) [Biosafety levels](/knowledge/diagnostics/emerging-tech/biosafety-levels-1-4-a-decision-framework-for-diagnostic-laboratories) (BSL-1 through BSL-4) define combinations of laboratory features, practices, and equipment matched to agent hazard. Most clinical and teaching microbiology work with cultures occurs at BSL-2, which requires restricted access, a sink for handwashing, a biosafety cabinet for manipulations that may create aerosols, and annual training. BSL-3 adds directional airflow, sealed rooms, respiratory protection in many protocols, and enhanced training for agents that can cause serious or potentially lethal infection by inhalation. The infrastructure to support this exists widely but unevenly. A nationwide survey of microbiology laboratories within China's Centers for Disease Control and Prevention, with 990 valid responses collected between 2021 and 2023, found a nearly universal presence of BSL-2 laboratories (98.69 percent) across provincial, city, and county levels, with BSL-3 presence significant but variable across the network [4]. The same survey recorded high reported levels of biosafety training [4]. The takeaway for an individual worker is direct: BSL-2 containment is the standard baseline, and if your laboratory cannot provide BSL-2 features, BSL-2 agents do not belong on your bench. Work at BSL-3 is a different discipline entirely. Research protocols involving BSL-2 and BSL-3 agents, including imaging-based studies of HIV, tuberculosis, and dengue viruses, describe dedicated facilities, specialized procedures, and heightened staff requirements that have no analogue at the open bench [5]. A worker who has only ever handled BSL-2 organisms should never assume those habits transfer to higher containment without formal retraining and supervised competency verification. ## Materials and Reagents for Safe Culture Handling | Item | Working concentration or specification | Purpose and notes | |, - |, - |, - | | Class II biosafety cabinet | Certified annually, airflow alarm functional | Primary engineering control for open manipulation of BSL-2 and higher cultures | | Sodium hypochlorite disinfectant | 1:10 dilution of household bleach, approximately 0.5 percent sodium hypochlorite, prepared fresh | Primary surface disinfectant, corrosive to stainless steel so rinse with water or 70 percent ethanol after contact time | | Ethanol solution | 70 percent (v/v) in water | Rapid surface disinfection of gloved hands and nonporous materials, flammable, keep away from open flame | | Nitrile examination gloves | Powder-free, changed between tasks | Single-use barrier, double-glove for agents with high inoculation risk | | Fluid-resistant lab coat or gown | Back-closing, long sleeves | Protects skin and clothing, dedicated to the laboratory, never worn home | | Eye and face protection | Goggles or face shield | Required whenever splashes or aerosols are foreseeable | | Sharps container | Puncture-resistant, closable, at point of use | Eliminates most percutaneous exposure risk | | Autoclavable biohazard bags and pans | Rated for steam sterilization | Containment of contaminated waste before autoclaving | | Biological safety aerosol-resistant centrifuge cups | Sealed rotors or safety cups | Required for liquid cultures of pathogens | | Heat block or validated inactivation method | Per validated protocol | For confirmed inactivation before downstream testing, see decontamination section | Short safety note: hypochlorite solutions irritate skin and mucous membranes, release chlorine gas when mixed with acids or ammonia-based cleaners, and lose activity within days once diluted. Prepare fresh dilutions, never mix chemical disinfectants, and keep ethanol away from Bunsen burners. ## Safe Handling of Microbial Cultures Step by Step The following procedure covers a routine working session with live cultures at BSL-2. Each step states the reason it matters, because operators who understand the reason follow the rule under pressure. 1. **Complete or review the written risk assessment before the first manipulation.** This fixes the containment level, PPE, and permitted procedures for the specific organism in your hands. It converts handling decisions from habit into policy, which is the single strongest predictor of consistent safe behavior. 2. **Verify training status and competency records for every person at the bench.** Microbiology biosafety training must be current for the specific tasks being performed, not merely for laboratory entry. A worker who has not been signed off on cabinet work should not perform cabinet work unsupervised, however experienced they appear. 3. **Plan the workflow before touching any culture.** Decide which media, reagents, and instruments you need and place them in the cabinet or on the bench before starting. Reaching over open cultures to grab a forgotten reagent drags contaminated sleeve fabric across the work, which is both a contamination and an exposure mechanism. 4. **Disinfect the biosafety cabinet interior and let it run.** Wipe all interior surfaces with an appropriate disinfectant and allow the cabinet to purge for at least 5 minutes before loading material. The cabinet's air curtain needs time to stabilize after any interruption. 5. **Put on PPE in the correct order.** Lab coat, then mask or face shield if indicated, then gloves pulled over coat cuffs. Glove-over-cuff prevents skin exposure at the wrist, which is the most commonly contaminated skin site during handling. 6. **Load the cabinet correctly.** Place work at least 4 inches inside the sash opening, keep the front grille clear, and separate clean items (media, loops, labels) from contaminated items (used plates, pipettes). Blocking the front grille disrupts the laminar airflow and can push contaminated air back toward the operator. 7. **Work slowly and shallowly.** Perform all manipulations at least 6 inches inside the cabinet, with deliberate motions. Rapid arm movement through the cabinet face breaks the air curtain. Open loops, tubes, and plates for the shortest time possible. 8. **Avoid or contain every aerosol-generating step.** Use a Bunsen burner-free technique inside the cabinet (electric incinerators or disposable loops), inoculate tubes by touching the loop to the inner wall rather than dipping, and always use sealed rotors or safety cups for centrifugation. If a protocol requires vortexing or sonication of a pathogen, perform it in a sealed container inside the cabinet. 9. **Never mouth-pipette and never recap needles.** Use mechanical pipetting aids only. Needlestick injuries from recapping are among the most preventable percutaneous exposures in any laboratory. 10. **Decontaminate surfaces during and after work.** Wipe gloves with 70 percent ethanol between distinct tasks and disinfect all interior cabinet surfaces when the session ends. Contamination migrates constantly during real bench work, so end-of-session disinfection of the start-of-session surface is not sufficient. 11. **Segregate and contain all waste at the point of generation.** Plates, tubes, and pipettes go into autoclavable biohazard bags or pans inside the cabinet area. Sharps go directly into a sharps container without handling. Waste never leaves the room in an open container. 12. **Remove PPE in reverse order and wash hands.** Gloves first (turned inside out), then coat, then face protection, then a full handwash at the sink. Handwashing after glove removal is mandatory because glove perforation is common and invisible. 13. **Document the session.** Record what organisms were handled, any deviations from procedure, and any incidents, however minor. Incident patterns that look trivial individually (small drips, a torn glove) are the early signal of failing practice. ## Working in a Biosafety Cabinet: Practical Tips The biosafety cabinet is the central engineering control for culture handling, and most failures are behavioral rather than mechanical. These safe handling tips for microbial cultures address the habits that matter most. - **Keep the sash or work opening at the marked height.** Raising it beyond the certification point compromises containment even though the cabinet keeps running. - **Never disrupt the airflow.** Paper, tubing, or your arm across the front grille redirects the intake air and defeats the entire design. - **Reduce clutter.** Every extra item inside the cabinet creates turbulent eddies and shadowed surfaces that disinfectant cannot reliably reach. Bring in only what the session needs. - **Understand what a cabinet does not do.** A Class II cabinet protects the worker, the product, and the environment through HEPA filtration, but it does not protect against chemical vapors, and it is not a substitute for closed centrifuge rotors or for avoiding aerosol generation in the first place. - **Watch the certification date.** An out-of-certification cabinet is a box with a fan. Report an expired certificate, an airflow alarm, or unusual noise, and stop work until it is inspected. ## Decontamination, Inactivation, and Waste ![Worked calculation showing that 20 and 30 minute heating at 80 or 95 degrees Celsius failed for two loops of biomass, while 90 minutes was needed.](/article-images/illustrations/safe-handling-of-microbial-cultures-biosafety-heat-inactivation-time.webp) Three different outcomes are often confused. Cleaning removes visible soil. Disinfection reduces viable organisms on surfaces. Inactivation or sterilization destroys the organisms entirely. Cultures must be inactivated or sterilized before they leave containment, whether they are headed for the autoclave, the sink, or downstream testing. Steam sterilization (autoclaving) at standard conditions is the default terminal treatment for contaminated solid waste and liquids. For cultures that must be processed further, such as protein extraction for mass spectrometry identification, validated inactivation is essential, and validation means demonstrated kill for your specific organism and biomass. Inactivation methods must never be assumed effective without evidence. For Mycobacterium tuberculosis, a study of six heat inactivation methods at 80 and 95 degrees Celsius for 20, 30, and 90 minutes found that 90 minutes of heating was necessary to inactivate samples with two loops of biomass, and that heavier inactivation loads also risked denaturing proteins needed for downstream MALDI-TOF mass spectrometry identification [6]. Two practical lessons follow. First, killing an organism with the thermal resistance and lipid-rich cell wall of mycobacteria takes far longer than killing routine enteric bacteria. Second, any inactivation method that damages the analyte you need for identification creates pressure on staff to skip inactivation, so the method must be validated for both safety and performance together. After disinfection, wash or wipe down surfaces because hypochlorite residue corrodes cabinet stainless steel over time. Waste tracking should record what was treated, when, and by whom, so that a failed autoclave cycle can be traced back to specific cultures. ## Spill and Exposure Response Every laboratory that cultures pathogens needs a written spill plan, a stocked spill kit, and staff who have rehearsed it. The core sequence for a spill of a BSL-2 or higher culture inside containment is: 1. Stop working and alert everyone in the room. Do not attempt to wipe a spill immediately, because disturbing a liquid culture liberates aerosols. 2. Cover the spill with absorbent material soaked in disinfectant, working from the outer edge inward to avoid spreading the pool. Apply enough contact time, typically at least 10 minutes for fresh hypochlorite, before any cleanup. 3. Wear fresh gloves, a gown, and face protection during cleanup. Collect all material into a biohazard bag or sharps container as appropriate. 4. Disinfect the area again after physical cleanup, then wash hands. 5. Report the spill and, for any potential personal exposure, follow the institution's exposure protocol immediately, including wound care, baseline serology or post-exposure prophylaxis where indicated, and medical follow-up. For a spill involving a spore-forming organism such as Bacillus anthracis, extra care is warranted. Anthrax spores resist ordinary disinfection and persist in the environment for years, and human anthrax presents as cutaneous, gastrointestinal, or pulmonary disease depending on route of exposure, with severe outcomes including septicemia and meningitis. Spill response for spore formers requires agent-specific disinfectants and dwell times, documented in the laboratory's procedures before such a culture is ever accepted. Exposure response deserves the same seriousness as spill response. Report every percutaneous injury, splash, and suspected aerosol event the same day. Delayed reporting is the most common reason post-exposure prophylaxis fails, because many agents have narrow windows for effective intervention. ## Common Mistakes and Limitations The following common mistakes account for most culture-handling failures seen in real laboratories. - **Processing unidentified cultures on the open bench.** The classic laboratory-acquired infection scenario is a fastidious or slow-growing pathogen (Brucella, Francisella, Coccidioides) being subcultured and sniffed or manipulated before identification. Any culture from a source or syndrome consistent with a high-consequence agent should be treated as hazardous until proven otherwise. - **Treating a biosafety cabinet as a clean workbench.** Storing reagents, personal items, or notebooks inside the cabinet disrupts airflow and creates decontamination gaps. - **Generating aerosols casually.** Tapping a vortexed tube before opening it, cracking a sealed centrifuge cup on the open bench, expelling the last drop from a pipette, and flaming a loop with a heavy inoculum are all routine behaviors that create invisible exposure. - **Improper gloving and doffing.** Touching door handles, keyboards, or phones with gloves, and removing gloves by snapping them toward the face, transfers contamination beyond the bench. - **Skipping handwashing because gloves were worn.** Gloves leak. Handwashing after glove removal is non-negotiable. - **Overloading or misloading the autoclave.** Packed biohazard bags block steam penetration and leave viable organisms in the center of the load. - **Assuming inactivation without validation.** As the tuberculosis heat-inactivation data show, effective kill depends on organism, biomass, temperature, and time [6]. A method validated for one agent is not automatically valid for another. - **Letting training lapse.** Competency decays. Workers rotated into a new section, new staff, and long-tenured staff who have drifted all need re-verification. - **Ignoring near-misses.** A culture of unreported small incidents hides the trend until a serious exposure occurs. - **Over-reading favorable risk studies.** Single-center studies showing low measured risk under defined conditions, as with the B. pseudomallei handling evaluation, describe those conditions only, not permission to abandon engineered controls in your own laboratory [3]. Two limitations belong in every honest biosafety program. First, compliance is behavioral and imperfect. Surveys show high self-reported adherence, but self-report overstates practice, and a large nationwide survey can document training rates without capturing whether behaviors hold under time pressure [4]. Second, biosafety is a moving target. New platforms such as molecular and [genomic diagnostics](/knowledge/bioinformatics/genomic-diagnostics-choosing-the-right-test-for-clinical-and-veterinary-applications) are shifting much routine pathogen identification away from live-culture manipulation, which reduces exposure opportunities, but they do not eliminate the need for culture when isolation, susceptibility testing, or strain archiving is required [7], and traditional culture methods retain an important diagnostic role alongside molecular tests [8]. ## Storage and Transport of Cultures Cultures remain hazardous during storage and transport, and safe handling extends past the bench session. - **Label completely at the moment of setup.** Organism or specimen identifier, date, and handler initials on every container. Unlabeled cultures are themselves a safety hazard because the next person cannot apply the correct precautions. - **Store working stocks at appropriate temperatures.** Most bacterial working cultures are held refrigerated (typically 2 to 8 degrees Celsius) for short-term use, with long-term master stocks frozen, commonly at minus 70 to minus 80 degrees Celsius in cryoprotectant. These are standard microbiology practices, and each laboratory's procedure manual governs the specifics. - **Inventory and retrieve reliably.** An untracked freezer box of unknown isolates is a liability. Maintain a written inventory and periodically purge organisms no longer needed. - **Transport in sealed, secondary containment.** Any culture moving between rooms or buildings travels in a closed, leak-proof secondary container, and higher-consequence agents require the institution's approved packaging and chain-of-custody documentation. - **Select agent isolates follow special rules.** Organisms such as B. pseudomallei and B. anthracis carry regulatory obligations for inventory, transfer, and reporting that go well beyond routine biosafety [3]. ## Training and Building a Safety Culture Microbiology biosafety training works when it is specific, recurrent, and tied to observed competency. Effective programs combine initial didactic instruction, supervised bench work with progressive autonomy, annual refreshers, and re-training after incidents or procedure changes. Documented training also protects the institution, and large laboratory networks now treat training coverage as a core performance metric alongside equipment and facilities [4]. The concept of biosafety continues to expand beyond individual laboratories. Contemporary frameworks discuss biosafety materials and biosafety chemistry, including improved disinfectants, personal protective equipment, and pathogen detection technologies developed in direct response to global infectious disease threats [9]. For the bench scientist, the practical meaning is that better tools arrive regularly, but no tool replaces the fundamentals: assess the risk, contain the hazard, protect yourself, and document everything. ## Troubleshooting | Symptom | Likely cause | Fix | |, - |, - |, - | | Frequent contamination of cultures with environmental flora | Cabinet not purged before loading, airflow disrupted by clutter, or materials added mid-session without disinfection | Clear the cabinet, purge at least 5 minutes, disinfect gloves between tasks, plan all materials before starting | | Persistent surface contamination near the cabinet front edge | Work performed too close to the sash opening or items touching the front grille | Move work at least 6 inches inside the cabinet, keep the grille clear | | Cabinet airflow alarm during work | Blocked grille, overloaded interior, or lapsed certification | Remove obstructions, reduce load, verify certification date, stop work if the alarm persists | | Recurring glove tears | Rings or jewelry, rough cabinet edges, sharp debris in waste bags | Remove jewelry, smooth or report sharp surfaces, never compress waste by hand | | Failed autoclave indicator strips inside bags | Overfilled bags blocking steam penetration or incorrect cycle | Fill bags half full, loosen bag tops, verify cycle parameters and indicator placement | | Chemical corrosion spots on cabinet stainless steel | Undiluted or aged hypochlorite left on surfaces, no rinse step | Use fresh 1:10 bleach with defined contact time, rinse with water or 70 percent ethanol afterward | | Staff unsure of containment level for an isolate | Risk assessment not performed or not updated after identification | Halt nonessential manipulation, complete a biosafety risk assessment, update the standard operating procedure | | Repeated minor spills or drips | Rushed transfers, overfilled containers, walking while carrying open cultures | Slow the workflow, use racks and carriers, never move open cultures through the laboratory by hand | ## Frequently Asked Questions ### What biosafety level applies to routine bacterial cultures? Most routine clinical bacterial and fungal cultures are handled at Biosafety Level 2, which requires restricted access, a biosafety cabinet for aerosol-generating work, PPE, and training. Agents known to cause serious infection by inhalation, such as Mycobacterium tuberculosis or Brucella species, require BSL-3 practices and facilities. ### How do I perform a biosafety risk assessment for a new culture procedure? Write down the agent, its hazard characteristics, every manipulation you will perform, the competency of the people involved, and the containment and PPE needed to reduce exposure to an acceptable level. Do this before the first manipulation and update it whenever the organism, procedure, or equipment changes. ### Can I open culture plates of dangerous organisms on the open bench? No. Isolates of high-consequence agents such as Burkholderia pseudomallei should be handled within a Class II biosafety cabinet at BSL-3 according to international guidance, and even at BSL-2, any manipulation likely to generate aerosols belongs inside a certified cabinet, not on the open bench. ### What disinfectant should I use on culture-contaminated surfaces? Fresh 1:10 diluted household bleach (approximately 0.5 percent sodium hypochlorite) is the standard primary disinfectant for most laboratory surfaces, with adequate contact time and a rinse afterward to protect stainless steel. Seventy percent ethanol is useful for gloved hands and quick wipes but does not reliably inactivate spores or non-enveloped viruses. ### What should I do immediately after a spill or exposure? Alert others, cover the spill with disinfectant-soaked absorbent material from the outside inward, allow contact time, clean up with fresh PPE, and disinfect again. For any personal exposure, follow your institution's exposure protocol the same day, including wound care and medical evaluation, because post-exposure measures are time-sensitive. ### How often should biosafety training be renewed? At minimum annually, with additional retraining whenever you start a new procedure, move to a different containment level, or after any incident. Training must be task-specific and verified by observed competency, not just by attendance at a lecture. ### How should cultures be stored and moved between laboratories? Label every container fully at setup, store working stocks refrigerated and master stocks frozen per your laboratory's validated protocol, keep a written inventory, and transport any culture in sealed, leak-proof secondary containment. Select agents require additional regulatory documentation for storage and transfer. ### How do I safely inactivate a culture before disposal or downstream testing? Autoclave contaminated waste under a validated cycle, and for cultures needed for downstream testing, use an inactivation method validated for that specific organism and biomass. Heat inactivation requirements vary sharply by organism, and evidence shows that organisms such as Mycobacterium tuberculosis require extended heating times for adequate kill. ## Sources 1. [Laboratory-Acquired Infections in the MENA Region: A Systematic Review of Reported Cases and Biosafety Gaps.](https://pubmed.ncbi.nlm.nih.gov/41075834/) 2. [A global dataset of sequence, diversity and biosafety recommendation of arbovirus and arthropod-specific virus](https://pubmed.ncbi.nlm.nih.gov/37208388/) 3. [Laboratory Safety: Handling Burkholderia pseudomallei Isolates without a Biosafety Cabinet](https://pubmed.ncbi.nlm.nih.gov/33910967/) 4. [The state of biosafety across China's CDC microbiology laboratories: insights from a nationwide survey (2021-2023)](https://pubmed.ncbi.nlm.nih.gov/39157525/) 5. [Development of imaging techniques to study the pathogenesis of biosafety level 2/3 infectious agents](https://pubmed.ncbi.nlm.nih.gov/24990818/) 6. [Biosafety and Proteome Profiles of Different Heat Inactivation Methods for Mycobacterium tuberculosis](https://pubmed.ncbi.nlm.nih.gov/34937194/) 7. [Revolutionizing Medical Microbiology: How Molecular and Genomic Approaches Are Changing Diagnostic Techniques](https://pubmed.ncbi.nlm.nih.gov/38022057/) 8. [Microbiology of Severe Community-Acquired Pneumonia and the Role of Rapid Molecular Techniques](https://pubmed.ncbi.nlm.nih.gov/38196061/) 9. [Biosafety chemistry and biosafety materials: A new perspective to solve biosafety problems](https://pubmed.ncbi.nlm.nih.gov/35013725/)