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Questions and Answers
What does a '.gov' website signify?
What does a '.gov' website signify?
.gov websites belong to official government organizations in the United States.
Why should users only share sensitive information on secure websites?
Why should users only share sensitive information on secure websites?
Secure websites use HTTPS, indicated by a locked padlock icon, ensuring a safe connection.
What is the significance of Elsevier's COVID-19 resource centre?
What is the significance of Elsevier's COVID-19 resource centre?
It provides free access to COVID-19-related research in English and Mandarin for unrestricted reuse.
What are the advantages of using cell lines in scientific research?
What are the advantages of using cell lines in scientific research?
What key aspects are addressed when setting up a cell culture lab?
What key aspects are addressed when setting up a cell culture lab?
How can microbiological contaminants in cell culture be managed?
How can microbiological contaminants in cell culture be managed?
What factors influence the selection of a cell line and culture conditions?
What factors influence the selection of a cell line and culture conditions?
What does 'cell culture' refer to?
What does 'cell culture' refer to?
What are some early applications of cell culture techniques?
What are some early applications of cell culture techniques?
How does cell culture contribute to the reproducibility of experimental data?
How does cell culture contribute to the reproducibility of experimental data?
What precautions should be taken to ensure lab safety when handling cultured cells?
What precautions should be taken to ensure lab safety when handling cultured cells?
What role does personal protective equipment (PPE) play in a cell culture lab?
What role does personal protective equipment (PPE) play in a cell culture lab?
Define asepsis in the context of cell culture.
Define asepsis in the context of cell culture.
What is the significance of biosafety cabinets in cell culture labs?
What is the significance of biosafety cabinets in cell culture labs?
What potential hazards are associated with cultured cells?
What potential hazards are associated with cultured cells?
How can laboratory personnel minimize risks associated with biohazards?
How can laboratory personnel minimize risks associated with biohazards?
Explain the importance of screening donors when working with primary cells.
Explain the importance of screening donors when working with primary cells.
What actions should be taken following exposure or spillage of infectious agents in the lab?
What actions should be taken following exposure or spillage of infectious agents in the lab?
How does the Material Safety Data Sheet (MSDS) assist laboratory personnel?
How does the Material Safety Data Sheet (MSDS) assist laboratory personnel?
What are some common practices in a cell culture lab to maintain a sterile environment?
What are some common practices in a cell culture lab to maintain a sterile environment?
Why is it important to remove potentially contaminated gloves immediately?
Why is it important to remove potentially contaminated gloves immediately?
What restrictions exist regarding food and drink in a cell culture lab?
What restrictions exist regarding food and drink in a cell culture lab?
What are the primary sources of contamination in a cell culture laboratory?
What are the primary sources of contamination in a cell culture laboratory?
How can microbial contaminants impact cultured cells?
How can microbial contaminants impact cultured cells?
What role does the biosafety cabinet play in cell culture?
What role does the biosafety cabinet play in cell culture?
What is the recommended process for decontaminating the biosafety cabinet after use?
What is the recommended process for decontaminating the biosafety cabinet after use?
Why is regular maintenance important for biosafety cabinets?
Why is regular maintenance important for biosafety cabinets?
How should lab coats be managed to reduce contamination risks?
How should lab coats be managed to reduce contamination risks?
What is the purpose of adding antibiotics to cell culture media?
What is the purpose of adding antibiotics to cell culture media?
Describe how filter-sterilization of liquids is performed.
Describe how filter-sterilization of liquids is performed.
What should be done with items before entering the biosafety cabinet?
What should be done with items before entering the biosafety cabinet?
Explain the impact of pH changes in cell culture due to bacterial contamination.
Explain the impact of pH changes in cell culture due to bacterial contamination.
Why should the number of items in the biosafety cabinet be minimized?
Why should the number of items in the biosafety cabinet be minimized?
What is the significance of training staff to recognize contamination signs?
What is the significance of training staff to recognize contamination signs?
What should laboratory staff do to ensure a clean work surface?
What should laboratory staff do to ensure a clean work surface?
Explain the importance of keeping the cell culture area free from dust.
Explain the importance of keeping the cell culture area free from dust.
Flashcards
What is a .gov website?
What is a .gov website?
A website with the domain '.gov' that belongs to an official government organization in the United States.
What is a secure .gov website?
What is a secure .gov website?
A secure website with HTTPS, indicated by a lock icon or 'https://' in the address bar. Sensitive information should only be shared on secure .gov sites.
Does NLM endorse content in its databases?
Does NLM endorse content in its databases?
The National Library of Medicine (NLM) provides access to scientific literature, but its inclusion in databases like PubMed does not represent an endorsement or agreement with the content.
What is cell culture?
What is cell culture?
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Why are cell lines useful in research?
Why are cell lines useful in research?
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What are key considerations in cell culture labs?
What are key considerations in cell culture labs?
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How are cell lines and culture conditions chosen?
How are cell lines and culture conditions chosen?
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What are some important techniques in cell culture?
What are some important techniques in cell culture?
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Cell Culture
Cell Culture
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Clonal Cell Population
Clonal Cell Population
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Asepsis
Asepsis
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Biosafety
Biosafety
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PPE (Personal Protective Equipment)
PPE (Personal Protective Equipment)
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Biosafety Cabinet
Biosafety Cabinet
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MSDS (Material Safety Data Sheet)
MSDS (Material Safety Data Sheet)
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Standard Cell Culture Practices
Standard Cell Culture Practices
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Parenteral Inoculation
Parenteral Inoculation
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Ingestion
Ingestion
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Inhalation
Inhalation
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Contact with Skin and Mucous Membranes
Contact with Skin and Mucous Membranes
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Waste Decontamination and Disposal
Waste Decontamination and Disposal
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Gene Therapy
Gene Therapy
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Primary Cell Culture
Primary Cell Culture
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Autoclaving
Autoclaving
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Filter Sterilization
Filter Sterilization
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Antibiotics
Antibiotics
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E. coli
E. coli
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Mold
Mold
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Yeast contamination
Yeast contamination
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Cross-contamination by cell lines
Cross-contamination by cell lines
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Chemical contamination
Chemical contamination
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Microscopic inspection
Microscopic inspection
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Cloudy cell culture
Cloudy cell culture
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Yellowing of media
Yellowing of media
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Cell line
Cell line
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Contamination
Contamination
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Study Notes
Government Websites and Security
- Official US government websites end in .gov
- Secure .gov sites use HTTPS (https://) with a padlock icon.
- Share sensitive info only on secure websites.
National Library of Medicine (NLM) and Elsevier
- NLM provides access to scientific literature.
- Inclusion in NLM databases does not mean NLM or NIH endorse content.
- Elsevier created a COVID-19 resource center with free English and Mandarin resources.
- Elsevier grants unrestricted research reuse and analysis rights on COVID-19-related research in PubMed Central and WHO COVID database.
Cell Culture Principles
- Cell culture is a versatile technique for biological research (prokaryotic and eukaryotic)
- Cell lines are homogenous leading to reproducible data.
- Cell culture labs need safety guidelines for personnel and cells.
- Microbiological contamination is a potential issue.
- Cell line selection depends on the desired assay.
- Cell culture has roots in studying tissue growth, virus biology, vaccines, genes, & biopharmaceuticals.
Clinical Applications of Cell Culture
- Cell culture creates model systems to study basic cell biology.
- It's used to replicate disease mechanisms and test drug toxicity.
- Gene and molecular pathway manipulation is possible.
- Clonal cells/defined cultures reduce interfering variables, improving data consistency.
- Risk management is crucial dealing with infectious agents (e.g., HBV, HIV) and hazardous reagents.
Cell Culture Lab Safety
- Lab staff responsible for their safety and others’.
- Personal Protective Equipment (PPE) required (lab coats, gloves, goggles).
- Remove PPE when leaving/contaminating.
- Biosafety cabinets prevent exposure to hazardous materials and environment contamination.
- Disposal of hazardous materials via proper channels.
- Avoid food, drink, cosmetics, etc. in the lab.
- Decontaminate equipment before and after use.
- Immediate decontamination of potentially contaminated gloves, equipment, or spills.
- Inform lab safety officer immediately upon exposure.
- Immunization and staff training are vital.
- Screening of human tissue donors for pathogens.
Cell Culture Contamination Control
- Maintaining aseptic conditions is critical: free from pathogens (bacteria, fungi, viruses, parasites).
- Microbiological contamination (bacteria, fungi, viruses, parasites) is a major problem in cell cultures.
- Contaminated equipment, media, incubators, and cell culture vessels can introduce microorganisms.
- Use HEPA-filtered biosafety cabinets to limit contamination.
- Thorough decontamination of equipment entering the biosafety cabinet.
- Regular equipment maintenance is vital
- Maintaining clean lab surfaces (incubator, centrifuge, microscope, water bath, fridge, freezer).
- Use of sterile media and filter-sterilization techniques.
- Use of preservatives (antibiotics) to limit bacterial growth may cause resistance strains.
- Train staff to recognize early signs of contamination.
- Contamination can alter cell phenotype and genotype.
Additional Notes
- Cell culture contaminants can have various morphologies.
- Bacteria (rod-shaped, cocci, flagellated) will appear turbid or change phenol red color.
- Yeast, mold have string-like or ovoid shapes.
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