Assertion: acetylcholine's effect | /r/HasProperty | blocked by mecamylamine
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Source sentences:
text: Using in vivo single-unit recordings from anesthetized rats, Dautan et al.  applied optogenetic stimulation to cholinergic neurons in the PPN and the LDT and observed the excitation of VTA DA neurons, which are regulated by AChRs (the effect is blocked by locally applied atropine and mecamylamine).