A, B, Colocalization of PAR-1 (A) with PDGF-A (B) in the dorsal horn of the mouse spinal cord. C-i, C-ii, The green labeling for PAR-1 and the red labeling for PDGF-A show apparent colocalization in the dorsal horn of the spinal cord. PDGF-A-like IR is almost all seen in the cytoplasm of PAR-1-labeled cells in the dorsal horn of the spinal cord (C-ii, arrow). Scale bars: A, B, C-i, 50 μm; C-ii, 10 μm.