title: [Investigation of sister chromatid exchanges in lymphocytes of peripheral blood in the middle-aged persons and on the possible effect of mutagens from external environment on SCEs in lymphocytes].
mesh_terms: D000328:Adult; D003434:Crossing Over, Genetic / Q000187:drug effects*; D004785:Environmental Pollutants / Q000633:toxicity*; D006801:Humans; D008214:Lymphocytes / Q000648:ultrastructure*; D008875:Middle Aged; D009153:Mutagens; D012854:Sister Chromatid Exchange / Q000187:drug effects*
chemical_list: D004785:Environmental Pollutants; D009153:Mutagens