uterine crypt

https://doi.org/10.1351/goldbook.11346

Chamber on the interior surface of the uterus that serves as a site of embryo homing and implantation.

Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 818 [Terms] [Paper]