A two-celled embryo surrounded by the vitelline membrane and the zona pellucida as it normally appears about 24 hours after ovulation as it passes from the ampulla to the isthmus of the cow oviduct.  The diameter of this embryo (about 0.1 mm) likely changed little from that of the ovulated oocyte.

Bovine embryo, 2 cells

Credit: Harold Hafs

Digital Credit: Harold Hafs

Publisher: None

Rights: No rights reserved - image is in the public domain

Description: A two-celled embryo surrounded by the vitelline membrane and the zona pellucida as it normally appears about 24 hours after ovulation as it passes from the ampulla to the isthmus of the cow oviduct. The diameter of this embryo (about 0.1 mm) likely changed little from that of the ovulated oocyte.

Image Resolution: 1024x1073

File Size: 737136 bytes