Expression of LT receptor mRNAs in the rat DRG. (A) The expression of mRNAs for LT receptors were determined by the RT-PCR technique. Gel panel shows PCR products from the L4, 5 DRGs taken from naive rats. (B, D) Low-magnification darkfield images of ISHH show BLT1 and CysLT2 mRNAs of naive rats, respectively. (C, E) Higher-magnification brightfield images of the left-hand images. Arrows indicate positively labeled cells by ISHH. Scale bars: B, D; 500 μm, E; 25 μm, C; 12.5 μm.