Subcortical Rotation:

"Spray Painting"

The video sequence at the right demonstrates the movements of Nile blue spots applied to the subcortical layer of a Xenopus oocyte following fertilization. During the ensuing subcortical rotation movements, the dense, yolky vegetal deep cytoplasm rotates with respect to the overlying cortex to produce a 30 degree relative rotation. This classic footage provided by Dr. J.-P. Vincent was acquired using a fluorescence microscope and a sensitive video camera.


Size of Movie: 4,934 K