Abstract
Supernatant solutions obtained from chick embryo optic lobe cultures contain macromolecular components which specifically interact with cells obtained from neural retina in a way which reflects the in vivo pattern of innervation of the tectum by retinal axons. [ 14C]Glucosamine-labeled supernatants were prepared from either dorsal and ventral or anterior and posterior optic-lobe halves and tested for their ability to bind to and inhibit cap formation of Concanavalin A receptors on cells prepared from dorsal, ventral, nasal, or temporal retina quadrants. In all cases, preferential binding and inhibition of cap formation can be correlated with the pattern of innervation of the optic lobes by retinal fibers.
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