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Dopamine receptor subtypes D1 and D2, and many other seven-transmembrane receptors including adenosine receptor A2A, are colocalized in striatum of brain. These receptors stimulate or inhibit adenylyl cyclases (ACs) to produce distinct physiological and pharmacological responses and interact with each other synergistically or antagonistically at various(More)
In vivo, neurons of the cerebral cortex of rat embryos did not stain with antibodies to the catecholamine (CA) biosynthetic enzyme tyrosine hydroxylase (TH) even when examined using a highly sensitive technique for radioimmunocytochemistry. However, when embryonic day (E) 13 cortex was grown 1 d in culture, several thousand cells expressed immunoreactive(More)
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