JOSE CALVO / SCIENCE PHOTO LIBRARY JOSE CALVO / SCIENCE PHOTO LIBRARY
Light micrograph of seminiferous tubules from a human testis. The germinal epithelium shows spermatogonia, spermatocytes in meiosis, and spermatids in the process of spermiogenesis. H&E stain. Magnification: x180 when printed at 10 centimetres wide.
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