Distribution of CysLT2 mRNA in histochemically identified neuronal subpopulations in the rat DRG. Brightfield images of combined immunohistochemistry for (A) NF-200, (B) CGRP, (C) IB4, (D) TRPV1, (E) P2X3 with ISHH for CysLT2 mRNA. Arrows indicate examples of double-labeled cells. Solid arrowheads indicate positively labeled cells by ISHH and open arrowheads indicate examples of immunoreactive cells. Scale bars; 25 μm.