Smoking and sister chromatid exchange.
D000328:Adult; D002675:Child, Preschool; D002869:Chromosome Aberrations; D003434:Crossing Over, Genetic; D005260:Female; D006801:Humans; D007223:Infant; D008214:Lymphocytes / Q000648:ultrastructure; D008297:Male; D012854:Sister Chromatid Exchange; D012907:Smoking