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TRPA1 is expressed in a subset of TRPV1 positive neurons in human DRGs. (A, B) Representative dual-color fluorescence in situ hybridization detecting TRPV1 (red) and TRPA1 (green) transcripts in human DRG tissue sections. (A) Overview of a human DRG section and (B) zoom-in of (A). The insert in (B) shows a close-up with arrowheads depicting double-positive cells. Note that all TRPA1 positive cells also express TRPV1. Scale bar = 100 μm.
