# @worldscifest on Instagram

- **Type:** Image
- **Original URL:** https://www.instagram.com/p/2ZF0WVE9iE
- **Gondola URL:** https://gondola.cc/posts/2461664-worldscifest-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/d47f7af22b.jpg
- **Posted:** 2015-05-07T19:14:09.000+00:00
- **Account Owner:** WorldScienceFestival (@WorldSciFest) — https://gondola.cc/WorldSciFest

## Caption

Fertilization: it's conceivable! An egg cell prevents more than one sperm from fusing with it by hardening its outer layer, the zona pellucida, after the first sperm makes it in. Photo via istock.com/luismmolina #science #ifls #iflscience #biology #conception #fertilization

## Stats

- **Views:** 0
- **Likes:** 29
- **Shares:** 0
- **Comments:** 1

## Tags

fertilization, science, ifls, iflscience, conception, biology

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