Fig. 6From: Computed tomographic findings and treatment of a bull with pituitary gland abscessPhotomicrograph showing testicular atrophy. Seminiferous tubules of a Holstein–Friesian bull with testicular atrophy attributable to abscess of the hypophysis. The tubules contain exfoliated germ cells and normal spermatozoa are not observed; the majority of cells exhibit spermatogenic arrest prior to the differentiation stage of development (spermiogenesis) H&E, bar 100 µmBack to article page