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The distribution of cyclic 3',5'-nucleotide phosphodiesterase activity in rat cerebral cortex was determined by cytochemical methods. The detectable phosphodiesterase activity was localized in postsynaptic (dendritic) nerve endings, most of it immediately adjacent to the synaptic membrane. Most of the postsynaptic nerve endings showed phosphodiesterase activity.
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Florendo et al. (1971) studied this question.
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