title: Morphological events occuring in the seminiferous tubules of the Brazilian Nelore zebu associated with puberty.
abstract: The morphological events occurring in the Brazilian Nelore zebu testis from 3 to 18 months of age are described. Spermatozoa were seen only at 16--18 months of age indicating a considerable delay in the sexual development of the Nelore zebu when compared with taurine breeds.
mesh_terms: D000818:Animals; D002417:Cattle / Q000254:growth & development*; D008297:Male; D012671:Seminiferous Tubules / Q000033:anatomy & histology* / Q000166:cytology; D012741:Sexual Maturation; D013094:Spermatozoa / Q000166:cytology; D013737:Testis / Q000033:anatomy & histology*