Bio 351 | Developmental Biology

Tuesdays and Thursdays 10:30 - 11:50
Description | Syllabus | Readings | Lab Schedule | Resources

Resources

Cortical rotation in Xenopus

Vegetal view | View movie.

The yolk platelets in the vegetal hemisphere of a fertilized egg were dyed with a pattern of spots. The egg was then embedded in gelatin and imaged from below. The movie starts with the spots illuminated with fluorescent optics. Note direction of movement = away from 5 o’clock. Then the room lights come on and the embryo cleaves, gastrulates, and finally forms the neural groove very close to 5 o’clock. Movie courtesy of Dr. Jean-Paul Vincent, who carries on the excellent scientific tradition of Belgian embryology. Visit his webpage.

Gastrulation in Xenopus

Midsagittal view | View movie.
A confocal microscope was used to make optical sections of fixed embryos at different stages of gastrulation. The images were then morphed into a movie using Morph software. Animal pole is up; dorsal is to the right. There is a lot going on, so watch one region at a time. Movie courtesy of Dr. M. Danilchik (Reed '72), Oregon Health Sciences University. Visit his webpage.