Specific binding of peanut agglutinin to foveal and peripheral cone photoreceptors of monkey retina.

peanut agglutinin, a lectin with specific affinity for galactose beta-(1----3)-N-acetyl-galactosamine disaccharides, showed binding to the slender cones in the rod-free fovea as well as to the conical cones in the periphery of the monkey (Macaca fuscata) retina, but not to the rods, as revealed by light-microscopic cytochemistry with horseradish-peroxidase-conjugated lectin.