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Colour SEM of seminiferous tubule of the testis

Colour SEM of seminiferous tubule of the testis

P608/0069

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Credit

CNRI / SCIENCE PHOTO LIBRARY CNRI / 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. The tubule contains a swirl of forming sperm cells (red). Each testis is packed with seminiferous tubules. The tubules are lined by a stratified epithelium containing two types of cell: 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 (green) which produce testosterone. Magnification: x170 at 6x7cm size.

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