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Expression of TGFβRs (TGFβRI and TGFβRII) and TRPV1 in the DRG. A, Double immunofluorescence reveals colocalization of TRPV1 with TGFβRI and TGFβRII in DRGs from naive and PTD 14 rats. B, Immunohistochemistry reveals a significant increase in the number of TRPV1- and TGFβRI-positive neurons in L3–L5 DRGs both 4 and 24 h after intraplantar injection of TGF-β1. **p < 0.01 versus vehicle.
