title: Meiosis and spermatogenesis in two postpubertal males with Down's syndrome: 47, XY, G+.
mesh_terms: D000328:Adult; D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome / Q000235:genetics*; D006801:Humans; D007248:Infertility, Male / Q000235:genetics; D007621:Karyotyping; D007962:Leukocytes / Q000166:cytology; D008297:Male; D008540:Meiosis; D008853:Microscopy; D008938:Mitosis; D013091:Spermatogenesis; D013094:Spermatozoa / Q000166:cytology*; D013737:Testis / Q000473:pathology