DYNCre predominantly marks inhibitory neurons in the adult DH regardless of neonatal incision. A, Example of the distribution of the inhibitory neuron marker Pax2 (green) and DYN-tdTOM (magenta) in the adult mouse DH. Scale bar, 50 μm. B, Colocalization analysis revealed no significant effect of neonatal incision on the percentage of spinal DYN-tdTOM interneurons that exhibit an inhibitory phenotype (n = 18 sections; F(1,34) = 0.91, p = 0.35 for injury, repeated-measures two-way ANOVA).