zona pellucida
Copy
https://doi.org/10.1351/goldbook.11392
Acellular glycoprotein-rich
membrane
surrounding the mature
ovum
.
Source:
PAC, 2016,
88
, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 822 (https://doi.org/10.1515/pac-2015-1202)