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Spermiogenesis - early stage

Microimage
Spermiogenesis. Image copyright: University of Oslo, CC BY-NC-ND 4.0.

Here you see a very early stage in the spermiogenesis (development from spermatids to spermatozoa). The 9 + 2 structure of microtubules is visible, as is also the beginning aggregation of mitochondria around it.

Published July 29th 2019, updated August 30th 2020.