Frog eggs like those pictured here release zinc when fertilized, much like mammalian eggs do.
Credit
(Image by Tero Laakso/licensed under CC BY-SA 2.0.)
Usage Restrictions
None
License
Licensed content
Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.