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After axotomy, application of muscimol, a GABA(A) receptor agonist, induced an increase in intracellular Ca(2+) ([Ca(2+)](i)) in dorsal motor neurons of the vagus (DMV neurons). Elevation of [Ca(2+)](i) by muscimol was blocked by bicuculline, tetrodotoxin, and Ni(2+). In axotomized DMV neurons measured with gramicidin perforated-patch recordings, reversal(More)
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