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Examples illustrating nerve terminals distributed closely to the capillaries in the mucosa. Samples were from the proximal colon. Microphotographs at high magnification were acquired under 63X objective. (A–D) The vessels were painted by WGA perfusion (green), and nerve fibers were immunolabeled by PGP9.5, CGRP and VIP (red). (E, F) Show magnified areas framed in (D). The “***” indicated the lumen site.
