area pellucida

The epiblast spreads rapidly over the white yolk, and the area pellucida also increases in size.

Junction between the white-yolk spheres and the hypoblast cells at the passage from the area pellucida to the area opaca.

Section through anterior part of area pellucida in front of embryonic shield.

Section through the anterior part of the area pellucida in front of the primitive streak.

Section through area pellucida just in front of primitive streak.