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ATCC determines the biosafety level of a material based on our risk assessment as guided by the current edition of Biosafety in Microbiological and Biomedical Laboratories (BMBL), U.S. Department of Health and Human Services. It is your responsibility to understand the hazards associated with the material per your organization’s policies and procedures as well as any other applicable regulations as enforced by your local or national agencies.
ATCC highly recommends that appropriate personal protective equipment is always used when handling vials. For cultures that require storage in liquid nitrogen, it is important to note that some vials may leak when submersed in liquid nitrogen and will slowly fill with liquid nitrogen. Upon thawing, the conversion of the liquid nitrogen back to its gas phase may result in the vial exploding or blowing off its cap with dangerous force creating flying debris. Unless necessary, ATCC recommends that these cultures be stored in the vapor phase of liquid nitrogen rather than submersed in liquid nitrogen.
This cell line is a derivative of ATCC CCL-247 (HCT 116) in which one copy of the ATR (ataxia telangiectasia related) gene has been disrupted, and the other allele has been fixed with lox sites flanking exon 2 making it susceptible to Cre deletion. RefCortez D, et al. ATR and ATRIP: partners in checkpoint signaling. Science 294: 1713-1716, 2001. PubMed: 11721054
Subcultivation Ratio: 1:4 to 1:8
Medium Renewal: Every 2 to 3 days
Note: For more information on enzymatic dissociation and subculturing of cell lines consult Chapter 13 in Culture of Animal Cells: A Manual of Basic Technique by R. Ian Freshney, 5th edition, published by Wiley - Liss, N.Y., 2005.
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Cortez D, et al. ATR and ATRIP: partners in checkpoint signaling. Science 294: 1713-1716, 2001. PubMed: 11721054
Hay, R. J., Caputo, J. L., and Macy, M. L., Eds. (1992), ATCC Quality Control Methods for Cell Lines. 2nd edition, Published by ATCC.
Caputo, J. L., Biosafety procedures in cell culture. J. Tissue Culture Methods 11:223-227, 1988.
Fleming, D.O., Richardson, J. H., Tulis, J.J. and Vesley, D., (1995) Laboratory Safety: Principles and Practice. Second edition, ASM press, Washington, DC.