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. 2022 May 25;298(7):102077. doi: 10.1016/j.jbc.2022.102077

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© 2022 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Ultrastructural analysis of epididymal sperm.A, representative transmission electron microscopy (TEM) images of mitochondria from longitudinal sections of cauda epididymal sperm. Arrows indicate defined cristae found in mitochondria of capacitated sperm; arrow heads indicate dense cores found in mitochondria of Txnrd3^−/− sperm. B, classification of mitochondrial morphology in wildtype and Txnrd3^−/− sperm before and after capacitation. Total number of counted sperm are shown in parentheses above each bar. The numbers in the column indicate the proportion of each classification.