Lectin-binding sites in the retina of the pig, baboon and cat

There are notable interspecific differences in the lectin binding sites in the retina of mammals. In the porcine retina a distinct labeling of all the neurons of the stratum ganglionare is obtained by use of succinylated wheat-germ-agglutinin (WGA-S). In the baboon the stratum ganglionare does not label, though the entire inner plexiform layer can be demonstrated with WGA-S. In the cat WGA-S binds exclusively to the outer segments of the rods and cones. These specific differences will be compared with findings in the human retina [10] and discussed in connection with biochemical results obtained during our studies of the porcine retina.