Figure 9.

SCI increased activation of DH projection neurons. Representative images of activated Lamina I DH projection neurons following mechanical stimulation at 35 d after laminectomy: TdTomato (A), NK1R (B), merge (C); at 35 d postcontusion: TdTomato (D), NK1R (E), merge (F). Representative high-magnification orthogonal projection of an activated NK1R⁺ cell: TdTomato (G), NK1R (H), merge (I). Quantification of activated NK1R⁺ cells in Lamina I (J). White arrowheads indicate co-labeled cells; blue arrowheads indicate NK1R⁺TdTomato^- cells. Gray bars in graphs: laminectomy-only; white bars in graphs: cervical contusion. Scale bar: 70 μm.