title: Baseline frequency of sister-chromatid exchanges in 142 persons of the general Korean population.
abstract: Baseline frequencies of sister-chromatid exchange (SCE) were measured in lymphocytes of 142 healthy Koreans ranging in age from newborn infants to the fifties. The overall mean frequency of SCE was 8.78 +/- 0.24/cell. However, highly significant differences were found between individuals. The mean SCE values of the newborn babies and small children less than 10 years old were significantly lower than those of other age groups. No age effect was, however, observed in adolescent and adult subjects. Females had statistically higher SCE levels than males. The mean SCE frequencies of smokers, measured in male subjects more than 10 years old, were slightly, but statistically significantly, higher than those of non-smokers.
authors.affiliation: Department of Biology, College of Natural Sciences, Hanyang University, Seoul, South Korea.
authors.forename: E H
authors.initials: EH
authors.lastname: Park
authors.forename: Y J
authors.initials: YJ
authors.lastname: Kim
authors.forename: D H
authors.initials: DH
authors.lastname: Byun
authors.forename: J Y
authors.initials: JY
authors.lastname: Lee
authors.forename: J S
authors.initials: JS
authors.lastname: Lee
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D002648:Child; D002675:Child, Preschool; D004781:Environmental Exposure; D005260:Female; D005820:Genetic Testing / Q000379:methods*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007723:Korea; D008214:Lymphocytes; D008297:Male; D008875:Middle Aged; D012854:Sister Chromatid Exchange; D012907:Smoking / Q000009:adverse effects