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Histology and expression of transient receptor potential vanilloid 1 (TRPV1) in corneas of wild-type (WT) and TRPA1 mice. (a) TRPV1 was detected in the basal cells of the corneal epithelium of a WT or TRPA1 KO mouse. Arrowheads indicate TRPV1-positive cells. (b) Similarly, mRNA expression level of TRPV1 in the cornea was not affected by the loss of TRPA1. Scale bar, 100 μm.
