Sperm production site, SEM

Sperm production site, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Sperm production site. Coloured scanning electron micrograph (SEM) of a freeze-fractured transverse section through a seminiferous tubule, the site of sperm production in the human testes. This tubule contains a swirl of the tails of forming sperm cells at its centre. The tubule is lined with a stratified epithelium containing two types of cell: Sertoli cells, which nourish developing sperm, and spermatogenic cells, from which the sperm cells form in a process known as spermatogenesis. After this, the sperm cells mature into their mobile form in a process known as spermiogenesis. Magnification: x400 at 6x7cm size.

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Keywords: anatomy, coloured, fracture, freeze-fractured, healthy, human body, male, normal, production, reproduction, reproductive system, scanning electron micrograph, section, sectioned, sem, seminiferous tubule, site, sperm, spermatogenesis, spermiogenesis, testis

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