Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2022 Mar 15;106(4):644–675. doi: 10.1093/biolre/ioac037

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2022. Published by Oxford University Press behalf of Society for the Study of Reproduction.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

PMC Copyright notice

An electron micrograph of mouse spermatozoa in the lumen of oviduct’s isthmus about the time of ovulation after natural mating. Note the presence of many globular and vesicular materials in the isthmus lumen. Am, amorphous material; EP, mucus epithelial cell of isthmus; Lv, large vesicle; M, microvilli of mucus epithelial cell; St, cross section of sperm tail; and Sv, small vesicle. This electron micrograph was prepared by Dr. Kiyotaka Toshimori after perfusion fixation of mouse oviduct.