Morphological and GAD immunocytochemical properties of the dorsal lateral geniculate nucleus in a reptile.

Morphological and glutamic acid decarboxylase (GAD) immunocytochemical properties of the dorsal part of the lateral geniculate nucleus were investigated in reptiles, Caiman crocodilus. GAD immunoreactive neurons, although sparse, were found in the dorsal part of the lateral geniculate nucleus. In addition, puncta and fibers immunoreactive for GAD were also observed in this same nucleus. These results in Caiman utilizing GAD are similar to observations on the dorsal part of the lateral geniculate nucleus of other reptiles in which antisera to gamma amino butyric acid (GABA) were used.