# micropyle

> external encapsulating structure part of the chorion. A single cone-shaped specialization that forms an opening in the chorion that allows sperm entry into the egg prior to fertilization

**Wikidata**: [Q15946058](https://www.wikidata.org/wiki/Q15946058)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Micropyle_(zoology))  
**Source**: https://4ort.xyz/entity/micropyle


## References

1. Gene Ontology release 2019-10-07
2. UMLS 2023