title: An intersex (male pseudohermaphrodite) horse with 64XX/XXY mosaicism.
abstract: The clinical, pathological and chromosomal findings in a male pseudohermaphrodite horse are reported. This animal appeared to be a female but showed strong male sexual behaviour. A small penis emerged from a rudimentary vagina. Two small testes were present in the abdomen and undifferentiated seminiferous tubules contained only supporting cells. No uterus was found. Culture of peripheral blood leucocytes revealed a 64XX/65XXY mosaicism.
mesh_terms: D000818:Animals; D012734:Disorders of Sex Development / Q000473:pathology / Q000662:veterinary*; D006734:Horse Diseases / Q000235:genetics* / Q000473:pathology; D006736:Horses; D008297:Male; D009030:Mosaicism; D012729:Sex Chromosome Aberrations / Q000662:veterinary*