Fig. 2: Macrophages in the DRG, but not at the nerve injury site, are required for mechanical allodynia initiation.

a–e Effect of SNI followed by cannula injection with VEH or AP on immunostaining of GFP+ macrophages at the peripheral nerve (PN) ligature site (a–c) and DRG (d) (n = 3 per group) and on mechanical thresholds (e). Dashed lines in a and b denote ligature site; arrows point proximally. Scale bar: 50 µm. Gray shading indicates injection days. Data presented as mean ± SEM. Student’s t-test in c and d, and two-way repeated-measures ANOVA with Sidak’s correction in e. ***P < 0.001, NS nonsignificant compared with control. Source data are available as a Source Data file.