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Seminiferous tubule of testis

Seminiferous tubule of testis

P608/0086

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Credit

STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY

Caption

Seminiferous tubule. Coloured scanning electron micrograph (SEM) of a sectioned seminiferous tubule, the site of sperm production in the human testis. At the centre of the tubule, sperm cells are forming whose hair-like tails are seen. Each testis is packed with seminiferous tubules. The tubule is lined with epithelium containing two types of cell (yellow/green): Sertoli cells which nourish developing sperm, and spermatogenic cells which produce the sperm. The sperm are released into the cavity of the tubule to migrate to the epididymis, where they mature. Around the seminiferous tubule are Leydig cells (blue) that produce testosterone. Magnification: unknown.

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