All galleries » Male reproductive tract » Item 4 of 5

Testis

nucleus of a Sertoli cell
spermatogonium
primary spermatocyte
secondary spermatocyte
spermatid
spermatozoon

Intermediate stage of the testis of a pigeon (HE)

The micrograph above shows an intermediate stage. Here, also spermatids and a few spermatozoa are visible. The interstitial tissue between the seminiferous tubules is strongly diminished.