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Testis from an adult

Microimage
Testis. Image copyright: University of Oslo, CC BY-NC-ND 4.0. (Tissue stain: H+E).

This is a low power photomicrograph of a testicle. To the left you can see a smaller structure which is the epidydimis. The testicle is covered by a thick and indistensible tunica albuginea, which consists of dense connective tissue and smooth muscle cells. It appears as a  reddish band in the periphery of the testis.

Published May 19th 2019, updated February 28th 2023.