Slide 11 Mediastinum (human)
The separation of the tunica albuginea (on the right) appears to be artifact, but it is indeed real. The rete testis space is lined with simple cuboidal epithelium. Testicular sperm leave the testis through the rete testis. Seminiferous tubules are seen on the left.

Bar=250 microns

Can you find a straight tubule emptying into a portion of the rete testis?
(See expanded view center).
Expanded View