Testis, light micrograph

Testis, light micrograph

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: Testis. Light micrograph of a transverse section through a testis from a rat (Rattus sp.) showing the seminiferous tubules (dark purple). The seminiferous tubules are the site of sperm production (spermatogenesis). Mature sperm cells can be seen closest to each tubule's lumen (white), with their tails protruding into the lumen. Moving away from the lumen are increasingly immature precursor cells; first spermatids, then spermatocytes and finally spermatogonia. The outermost cells are sertoli cells, which nourish the maturing sperm. Magnification: x37 when printed at 10 centimetres tall.

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Keywords: biological, biology, healthy, histological, histology, light micrograph, light microscope, no-one, nobody, normal, rat, rattus sp, section, sectioned, seminiferous tubule, sperm production, spermatids, spermatocytes, spermatogenesis, spermatogonia, spermatozoan, spermatozoon, testes, testicle, testis

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