The hypothesis that gamma-aminobutyric acid (GABA) is the neurotransmitter of barnacle photoreceptors was tested by studying the effect of GABA on the membrane of the cell directly postsynaptic to the photoreceptor, by testing the ability of GABA antagonists to block transmission at this synapse, and by estimating the free GABA content of the photoreceptor. The results of these experiments suggest that GABA is not the photoreceptor's neurotransmitter.
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| http://dx.doi.org/10.1016/0006-8993(84)90476-1 | DOI Listing |
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