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Frequently Asked Questions

Is the glass bottom SensoPlate recommended for cell culture?

Greiner Bio One
While this plate provides excellent flatness and clarity for microscopic examination, some cell lines may interact with the adhesive used in production. It is best to pre-test your culture if you plan to incubate them in the SensoPlate for longer than 24 hours.
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Back to top What are the recommended carbon dioxide (CO2) levels needed to grow a cell culture?

ATCC: Frequently Asked Questions
Answer: While the levels of carbon dioxide in cell culture systems vary from that in ambient air (about 0.03%) up to 40% in air, generally either no added CO2 or 5% to 10% CO2 in air are the most frequently used. It is very important to adjust the concentration of sodium bicarbonate used in a medium to that required for equilibration with the level of CO2 used in the gas phase. Cells in culture produce CO2 and require small amounts of the compound for growth and survival.
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Why are some cell culture media better than others?

Welcome to Osmolality.com | Osmolality | FAQ
Media originally used for growth of mammalian cells were based on biological fluids, such as plasma. This type of media suffered many disadvantages including batch variation and vulnerability to contamination.
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How can cell culture media be made?

Welcome to Osmolality.com | Osmolality | FAQ
A bioreactor allows the growth of human tissues outside of the body that amass and behave like those in the body. Another is the Rotary Cell Culture System, as it provides a gentler environment than a dynamic or static tissue culture system, thereby allowing cells to aggregate, grow 3-dimensionally, and differentiate. The result will be cells or tissues that closely resemble the in vivo tissue equivalent.
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Back to top What should the osmolality of my cell culture medium be?

ATCC: Frequently Asked Questions
Answer: Most established vertebrate lines will tolerate a rather large variation in osmotic pressure. The useful range of osmolality of cell culture media for vertebrate lines is between 260 to 320 mOSM/kg. Invertebrate lines vary greatly in their sensitivity to osmotic pressure. For example, the snail embryo ATCC CRL-1494 requires medium of about 155 mOSM/kg, while some insect media prefer 360 to 375 mOSM/kg.
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Back to top Can I use HEPES buffer in my cell culture medium?

ATCC: Frequently Asked Questions
Answer: HEPES and other organic buffers can be used effectively with many cell lines (see Shipman, C. (1969) Proc. Soc. Exp. Biol. Med. 130: 305). However, be aware that the compound can be toxic, especially for some differentiated cell types, so its effects should be evaluated before routine use (People, C.A., et al., (1982) In Vitro 18: 755). HEPES has also been shown to greatly increase the sensitivity of media to the phototoxic effects induced by exposure to fluorescent light. [Zigler, J.S.
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Back to top How can I adapt a monolayer cell line to grow in suspension culture?

ATCC: Frequently Asked Questions
Answer: Not all cell lines can be adapted to suspension growth. In general, normal diploid anchorage-dependent (must be attached to a substrate to grow) cells cannot be adapted without the use of microcarrier beads to which they can attach. Lines such as L-929 (ATCC CCL-1) and HeLa (ATCC CCL-2) which are not anchorage-dependent can be adapted and variants that grow in suspension already exist.
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Back to top Why is it important to limit exposure of cell culture media to fluorescent lights?

ATCC: Frequently Asked Questions
Answer: An important but often overlooked source of chemical contamination results from the exposure of media containing riboflavin or tryptophan to normal fluorescent lighting (see references below). These media components are photoactivated by UV radiation emitted from most fluorescent lights and give rise to hydrogen peroxide. This generates free radicals that are toxic to cells; the longer the exposure the greater the toxicity.
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Back to top Can antibiotics and/or antimycotic agents be added to the cell culture medium?

ATCC: Frequently Asked Questions
Answer: Most cell culture technologists avoid using antibiotics for routine culture work. Antibiotics may mask contamination by susceptible bacteria and fungi while permitting mycoplasma to flourish unnoticed. Antibiotics may interfere with the metabolism of sensitive cells in culture. However, one may elect to introduce antibiotics for short periods to primary cultures or as a safeguard while propagating specific valuable stocks (e.g.
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Why is it not recommended to have darkly tinted and LoE glass in my insulating glass unit?

home window contractors, window contractors, replacement win...
It has been shown through Insulate's own experience that this combination may cause a seal failure in the insulating glass units. We believe this occurs because tinted glass tends to trap heat inside the home, whereas LoE tries to reflect outside heat back out. Both working together causes heat to build up between the two panes of glass, resulting in seal stress, and eventually unit failure.
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What about culture?

Center for Relationship Abuse Awareness: Frequently Asked Qu...
All cultures have both traditions of resistance to domestic violence as well as forms of acceptance of it. Culture cannot excuse domestic violence—though abusers may use “culture” as a way to justify their choice to abuse. Unfortunately, relationship abuse is prevalent in all cultures—. Across the world, different cultures may have different responses to domestic violence, and some may hold abusers more accountable than others.
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What are recommended parameters for glyph cell size?

PARC Solutions: DataGlyphs
When you are deciding how large to make the glyph marks, you need to take into account the entire system, including both the printing and imaging process, as mentioned above. We highly recommend experimenting with your actual printing and imaging equipment, as their characteristics can vary. For example, some printers print wider glyph marks than others, and the sensitivity of imaging equipment can vary greatly.
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What is toxicity of beads in relation to cells and cell culture?

Seradyn | Technical Support | FAQ
The concern about toxicity here is that the cells can take the particles in via either phagocytosis or endocytosis (two separate cellular mechanisms for taking in particles of various sorts). Once taken in things go into endosomes and these initial membrane bounded vesicles fuse with a lysosome forming a phagolysosome. In these vesicles things get digested by various enzymes.
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Who uses modern cell-culture rabies vaccines?

Rabies.net - FAQ
Countries in North America and western Europe only use modern cell-culture rabies vaccines. The use of cell-culture rabies vaccines is increasing throughout South East Asia and the Middle East. Unfortunately, countries in Asia, Africa and Latin America, where rabies is enzootic, still rely heavily on nerve-tissue vaccines.
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Why attempt to isolate mumps virus in cell culture?

NIP: Diseases/Mumps/Mumps Lab Testing Q&As
Virus isolation is considered the best method to detect infection. Virus can be detected when IgM antibodies or IgG titer rise are not detected. Additionally, it provides virus that can be used for sequence studies. Finally, isolation studies are less likely than PCR assays to give false positive results because of contamination. The sequence of the PCR product will confirm positive PCR reactions.
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Can 6-, 12-, 24-, or 48-well cell culture plates be used on MixMate?

Eppendorf Canada ::: FAQs-Mixers-Shakers
Yes, cell culture plates can be used on MixMate – as long as they comply with the SBS Standard for Microplates , and they can be mixed at a minimum mixing rate of 300 rpm.
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ActioNet, Inc.
ActioNet has created a culture that fosters excellence amongst its management staff and employees. The company rewards its employees for their outstanding performance through our recognition, reward, and incentive plan, promotions, and the annual holiday party and picnic. ActioNet, Inc. is a young company that thrives on innovative and open thinking. Our goal is to continually strive towards process improvement. No idea is too small to be considered for implementation.
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Frequently Asked Questions
One meaning of "culture" is "high culture", by which we often mean the artistic tastes of a society's educated elite - for instance in New York, going to the Opera, or to the Museum of Modern Art might be considered "cultural" activities.
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How can you replace the reactions of a whole animal in a test tube or a cell culture?

Dr Hadwen Trust: faqs
Non-animal research rarely simply replaces like for like. Instead we use a different approach in order to replicate the whole body scenario, replacing each type of animal experiment with a whole range of non-animal techniques that are used in combination. When it comes to studying the “whole animal” it is wrong to assume that animals are the best choice, or that they are necessary to solve every medical problem.
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What is the recommended firing temperatures for the Bormioli glass items?

Marck & Associates, Inc. - Frequently Asked Questions
Please remember these are suggested maximum firing temperatures. Proper firing is a function of temperature AND time. Temperatures can vary from lehr to lehr or kiln to kiln, and indicated temperatures may not be totally accurate. We strongly recommend test firing of this ware in your kiln/lehr prior to any production to establish the safe firing parameters for your specific equipment.
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Why is glass not recommended as my display case window?

Welcome to UV SYSTEMS - Ultraviolet light products
Glass can be used, but it is not recommended beside it will fluorescent under SW, one side will fluoresce much brighter than the other side. Glass will block the harmful SW UV, but it also transmits all LW UV. Special UV absorbing plastic is recommended for windows in display cases. Plastic such as Cyro Industries [www.cyro.com], OP-2 or OP-3 is recommended for display windows. All SW UV lights produce a small amount of LW UV, and of course all LW lights produce a large amount of LW UV.
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Is there a recommended cell phone for use with implants?

The Listening Center at Johns Hopkins
If using a T-coil, please try to get a phone that has a M3/T3 or M4/T4 rating as set by ANSI. The below PDF is courtsey of Cochlear Americas and was published in 2006. It describes compatibility as it relates to Cochlear devices.
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Up to what age is the cell transplant for Parkinson's disease recommended ?

Page Title
It depends on the length of duration of PD, requires consideration of patient's general health, medical and surgical history, life outlook, family structure, spiritual and religious beliefs, willingness, etc. A successful cell
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FAQ #1 Which oxygen sensor cell is recommended for use with the VR3?

The standard Teledyne cell recommended for use with the VR3 and a rebreather linking cable is the R22 with a 3.5 mini jack connection system.
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What about broken glass?

The Barefoot FAQ
Yes, broken glass exists, but it is not "all over the place" even on city streets. Unless it's a recent breakage, it gets kicked or swept into cracks, against walls, or right against curbs and isn't strewn about. For the little glass that does remain, again, just watch where you're going! But, for the seasoned barefooter with tough, thick soles, most broken glass is not a problem even if you step directly on it. The following paragraph was contributed by Neil Kelley.
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What is your Company Culture?

Frequently Asked Questions
Giant 5 Funds is a company where the best idea wins, bureaucrats are unwelcome, performance is recognized, and we never stop improving. We hire the smartest people we can find and free them to do what they are best at. Our team members create positive environments wherever they go and they always look for ways to improve everything around them.
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What is Deaf culture?

Frequently Asked Questions
Deaf people tend to share common involves behavior, values, beliefs, and world views, even though they may come from different backgrounds. This Deaf culture, and their language, unifies Deaf people as a group. The SWM booklet, Deaf Culture, gives several insights into the interesting world of Deaf people.
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Back to top How should I handle a spilled viral culture?

ATCC: Frequently Asked Questions
Answer: As part of a spill clean-up protocol, ATCC recommends that each laboratory have their own procedures set in place for handling potentially hazardous agents. This type of standard operating procedure should consider: 1) The agent(s) being handled; 2) The quantity of cultures being manipulated; and, 3) The size and scope of the laboratory itself.
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Back to top How do I determine the IFU for my viral culture?

ATCC: Frequently Asked Questions
Answer: To determine the IFUs, or Inclusion Forming Units, of a viral preparation, the material will first need to be cultured from the ATCC cryopreserved stock. A titration can then be performed to quantify the amount of viral material required to produce one inclusion body. One inclusion body is the equivalent of an IFU.
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