[Absence of radiation-induced adaptive response in lymphocytes of patients with Down's syndrome].


The adaptive syndrome and response (AR) in lymphocytes from 6 patients with Down syndrome (DS) were investigated. No AR was found to occur in all cases in DS cells pre-exposed to 3 rad of X-rays in S phase of cell cycle and then irradiated with 150 rad of gamma rays in G2 whereas the chromosome aberrations yield in cells from control donors was decreased… (More)


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