title: Human chromosome hot points. V. The effect of four nucleosides on chromosomes in folate-free medium.
abstract: Human lymphocytes from 18 healthy adults were cultured in minimal essential medium without folic acid. The addition of 4 mM cytidine or 1 mM guanosine to cultures 24 h prior to harvest produced a statistically significant increase in hot point 3p14 breaks. An excess of 3 mM adenosine or thymidine had no such effect on the hot point. The mechanism of the effects of nucleosides on hot points was discussed.
mesh_terms: D000328:Adult; D002478:Cells, Cultured; D002869:Chromosome Aberrations / Q000187:drug effects*; D003470:Culture Media; D005492:Folic Acid / Q000494:pharmacology; D006801:Humans; D009705:Nucleosides / Q000494:pharmacology*
chemical_list: D003470:Culture Media; D009705:Nucleosides; D005492:Folic Acid