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This line was derived from HOS (ATCC CRL-1543) by transformation with 0.01 mcg/ml MNNG (a carcinogenic nitrosamine). The cells exhibit a high saturation density, a high plating efficiency in soft agar and are tumorigenic in nude mice.
Propagation:
ATCC complete growth medium: The base medium for this cell line is ATCC-formulated Eagle's Minimum Essential Medium, Catalog No. 30-2003. To make the complete growth medium, add the following components to the base medium: fetal bovine serum to a final concentration of 10%.
Subculturing:
Subcultivation Ratio: A subcultivation ratio of 1:4 is recommended Medium Renewal: 2 to 3 times per week
Remove medium, rinse with fresh 0.25% trypsin solution, remove trypsin and let the culture sit at room temperature for 5 to 10 minutes. Add fresh medium, aspirate and dispense into new flasks. Subculture every 2 to 5 days.
References:
22895: Rhim JS, et al. Transformation of human cells in culture by N-methyl-N'-nitro-N- nitrosoguanidine. Nature 256: 751-753, 1975. PubMed: 1057046 26084: Rhim JS, et al. Characterization of human cells transformed in vitro by N-methyl-N'- nitro-N-nitrosoguanidine. Int. J. Cancer 19: 505-510, 1977. PubMed: 265298 32925: Zhu X, et al. Cell cycle-dependent modulation of telomerase activity in tumor cells. Proc. Natl. Acad. Sci. USA 93: 6091-6095, 1996. PubMed: 8650224
