CPMs in P2Y
transgenic and WT strains bind IB4, but do not express CGRP. Sample immunohistochemistry of characterized CPM neurons from WT(A-C) and P2Y1-/- (D-E) as indicated by Neurobiotin-labeling (left panels, green). CGRP immunoreactivity (middle panels, red) and labeling with IB4 (right panels, blue) are shown for each strain. Arrows indicate recorded cell. Scale bar represents 20 μm (F).