title: Spermatogenesis and meiotic chromosomal behaviour in aged men.
abstract: Spermatogenesis and meiotic chromosomal behaviour was analysed in a group of males aged 60-80 years. Decreased spermatogenesis was found in most of these aged men although individual differences existed. Chromosomal analysis of cells undergoing diakinesis showed significantly lower chiasma frequency in elderly men, compared with a group of younger control males and also with infertile males.
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D007621:Karyotyping; D008297:Male; D008540:Meiosis; D008875:Middle Aged; D009845:Oligospermia / Q000473:pathology*; D013091:Spermatogenesis; D006848:Testicular Hydrocele / Q000473:pathology