She believes the vitelline membrane also has a role in embryonic patterning, which is essentially how the embryo learns which way is up. "Eggs and shells form about the same time," she says.

In addition, the vitelline membrane strength of the control decreased 65% during storage and was between 30 and 50% of the vitelline membrane strength of CO 2 -cooled eggs at 12 wk. Rapid cooling with ...

References [1] Genomic disturbance of vitellogenin 2 (vtg2) leads to vitellin membrane deficiencies and significant mortalities at early stages of embryonic development in zebrafish (Danio rerio ...