Genotype and the cryopreservation process affect the levels of aneuploidy and chromosome breakage in cultured human fibroblasts.


Spontaneous micronucleus frequencies were measured in 11 human fibroblast strains, with early-passage cells that had never been frozen and with cells of comparable population doublings that had been cryopreserved in liquid nitrogen. The mean micronucleus frequency of the 11 strains increased from 14.0 +/- 0.7 to 20.4 +/- 1.8/1250 mononucleated cells (P = 0… (More)


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