1. l-Glutamate and l-aspartate depolarize type H1 horizontal cells in the isolated retina of goldfish, but only at millimolar concentrations. 2. When applied in the presence of d-aspartate, l-glutamate depolarizes H1 cells at concentrations nearly 15-fold lower than when it is applied alone. The effects of l-aspartate were not potentiated by either d-aspartate or d-glutamate. 3. Since d-aspartate seems also to enhance the effect of the transmitter released by cone photoreceptors, these results are consistent with the possibility that l-glutamate is a neurotransmitter of cones.
|Original language||English (US)|
|Number of pages||7|
|Journal||Comparative Biochemistry and Physiology. Part C, Comparative|
|State||Published - 1982|
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