Cell disposition and adhesiveness in the developing chick neural retina.

The adhesive properties of neural retinal cells located in the ventral and dorsal hemispheres of chick embryonic eyes were investigated. Cell adhesion was monitored using the collision efficiency method; this technique provides a system in which it is possible to identify any preferential adhesions that may occur between cells. In this study no adhesive specificity was detected between cells of the dorsal and ventral retina. This evidence would not support theories which invoke preferential cell adhesion as an explanation of the ordered projection of the neural retina onto the optic tectum during development.