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The depressant effect of 5-chloro-4-(2-imidazolin-2-yl-amino)-2,1,3-benzothiodiazole (DS103-282) on the polysynaptic excitation of interneurones in the cat spinal cord appears to be related to a postsynaptic reduction in the effectiveness of excitatory transmitters than to interference with their presynaptic release.
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Curtis et al. (1983) studied this question.
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