CCR2 promotes angiogenesis and robust regeneration within ANAs. Representative immunofluorescence staining and quantification of macrophages (CD68 and CD206; A), endothelial cells (CD31; B), Schwann cells (S100; B), and axons (NF200; C), within ANAs 14 days post-repair from CCR2 KO and WT mice. Longitudinal sections are presented. Scale bars represent 10 μm (A) or 50 μm (B-C). Mean ± SD, n=4/group; p values shown.