title: Sister chromatid exchanges in human lymphocytes exposed to nickel and lead. Preliminary communication.
mesh_terms: D003434:Crossing Over, Genetic / Q000187:drug effects*; D006801:Humans; D007854:Lead / Q000494:pharmacology*; D008214:Lymphocytes / Q000166:cytology* / Q000187:drug effects; D008938:Mitosis; D009153:Mutagens; D009532:Nickel / Q000494:pharmacology*; D012854:Sister Chromatid Exchange / Q000187:drug effects*
chemical_list: D009153:Mutagens; D007854:Lead; D009532:Nickel