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This line was originally thought to be derived from normal amnion, but was subsequently found, based on isoenzyme analysis, HeLa marker chromosomes, and DNA fingerprinting, to have been established via HeLa cell contamination.
The cells are positive for keratin by immunoperoxidase staining.
NOTE: Cells of this line contain HeLa marker chromosomes, and were derived via HeLa contamination
Propagation:
ATCC complete growth medium: Minimum essential medium (Eagle) in Earle's BSS with non-essential amino acids and 1 mM sodium pyruvate, 90%; fetal bovine serum, 10% Temperature: 37.0°C
Subculturing:
Subc*tion Ratio: A subc*tion ratio of 1:2 to 1:10 is recommended Medium Renewal: Twice per week
Remove medium, add fresh 0.25% trypsin solution for 3 to 5 minutes, remove trypsin and let culture sit at room temperature for 5 to 10 minutes. Add fresh medium, aspirate and dispense into new flasks.
Preservation:
culture medium 95%; DMSO, 5%
Related Products:
Recommended medium (without the additional supplements or serum described under ATCC Medium):ATCC 30-2003
recommended serum:ATCC 30-2020
References:
22153: Hayflick L. The establishment of a line (WISH) of human amnion cells in continuous c*tion. Exp. Cell Res. 23: 14-20, 1961. PubMed:13712490 26034: . . Am. J. Dis. Child. 103: 460, 1962.