title: Y-chromatin in aged males.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002648:Child; D002675:Child, Preschool; D006238:Haploidy; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D012728:Sex Chromatin; D012730:Sex Chromosomes