Gamma‐aminobutyric acid‐ and glutamic acid decarboxylase‐immunoreactive neurons in the retina of different vertebrates

The localization of gamma‐aminobutyric acid (GABA)‐ and L‐glutamate 1 carboxy‐lyase (GAD)‐immunoreactive neurons was compared in the skate, frog, pigeon, chicken, rabbit, and man. Horizontal cells show both GABA and GAD immunoreactivity in the skate, frog, and bird. Certain amacrine cells show GABA and GAD immunoreactivity in all species. The distribution of GABA‐ and GAD‐immunoreactive cell bodies and cell processes was very similar, if not identical, in the skate and man. In the other species, cell populations with GAD immunoreactivity also showed GABA immunoreactivity. However, in the bird, frog, and rabbit, the GABA‐immunoreactive amacrine cells were at least twice as numerous as the GAD‐immunoreactive cells. In birds, the distributions of the GAD and GABA immunoreactivities were different in the sublayers of the inner plexiform layer. The reason for the difference is currently unknown. GABA‐immunoreactive bipolar‐like cells were seen in the frog.

Bruun, A.Lund University,Lunds universitet(Swepub:lu)an1202br (author)
Ehinger, B.Lund University,Lunds universitet(Swepub:lu)oft-beh (author)
Ekström, P.Lund University,Lunds universitet(Swepub:lu)zool-pek (author)
van Veen, T.Lund University,Lunds universitet(Swepub:lu)oft-tve (author)
Wu, J. ‐YPenn State Milton S. Hershey Medical Center(Swepub:lu)eit-jwu (author)
Lunds universitetPenn State Milton S. Hershey Medical Center (creator_code:org_t)

By the author/editor: Agardh, E.; Bruun, A.; Ehinger, B.; Ekström, P.; van Veen, T.; Wu, J. ‐Y

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