Extension of in vitro life-span of gamma-irradiated human embryo cells accompanied by chromosome instability.


We studied the effect of repeated irradiation with a low dose rate (about 0.0012 cGy per min) of 60Co gamma-rays on the in vitro life-span of human embryo (HE) cells. HE cells were cultured in an incubator that was set in a 60Co gamma-ray-irradiation room, and the irradiation was repeated throughout the life-span of the HE cells (for about 150 to 160 days… (More)


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