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Immunoreactive nerve fibers and vascular branches in the submucosa of mouse colon. The vessels were painted by WGA perfusion (cyan), and for the nerve-vessel relationship, WGA perfused samples were immunolabeled in red for PGP9.5, TH, CGRP, and VIP (red). The nerve fibers were not found in the arterioles entering capillary webs (examples are indicated by arrows). The pattern is similar in different colonic segments. The samples were collected from the distal colon.
