title: Testicular hypoplasia in a boar with abnormal sex chromosome constitution (39 XXY).
abstract: A boar with testicular hypoplasia had 39 chromosomes. Giemsa banded preparations permitted unambiguous identification of an XXY sex chromosome constitution. Spermatogenic tissue was absent as in X chromatin-positive Klinefelter syndrome of man.
mesh_terms: D000818:Animals; D002875:Chromosomes; D007621:Karyotyping / Q000662:veterinary; D008297:Male; D012729:Sex Chromosome Aberrations; D013091:Spermatogenesis; D013552:Swine; D013553:Swine Diseases / Q000235:genetics* / Q000473:pathology; D013733:Testicular Diseases / Q000235:genetics / Q000473:pathology / Q000662:veterinary*; D013737:Testis / Q000473:pathology