“Blockade of neuromuscular transmission with botulinum neurotoxin A (1 U, 3 days), micropipette application of calcitonin gene-related peptide (CGRP) receptor … microM) 300 microm upstream from the methacholine application site, and denervation of the CGRP sensory nerve by 2 days of capsaicin treatment … to methacholine but did … dilatory response.”