Figure 3.

Mouse corpus cavernosum. Double immunohistochemistry. (a) Vesicular acetylcholine transporter (VAChT)-immunoreactive (IR) nerve terminals along smooth muscle bundles. FITC immunofluorescence. (b) Same section as in (a). NO synthase-IR nerve terminals displaying coinciding profiles with VAChT-IR varicosities. (c) Tyrosine hydroxylase (TH)-IR nerve terminals. FITC immunofluorescence. (d) Neuropeptide Y-IR nerve terminals exhibiting coinciding profiles with TH-IR nerve terminals. Same section as in (d). Texas red immunofluorescence. Bars=100 μm