Figure 6. TRPV1 and CGRP are expressed in epithelial C fibers in the monkey cornea. A: Neuronal β-tubulin (TUJ) immunolabeling of monkey wholemount cornea. B: Boxed area of A, small-diameter C fibers extending to the surface (asterisks). C: TRPV1 and CGRP are expressed in C fibers at the corneal surface. Scale bars: (A) 50 μm; (B) 20 μm; (C) 5 μm.