CD44 expression by microglia/macrophages within ischemic areas persists through chronic phases. Immunohistochemistry at post-stroke 2 (A-E) and 4 weeks (F-L) demonstrates that CD44 expression by microglia/macrophages within ischemic areas lasts during subacute (B-E) and chronic periods post-stroke (G-L). Results displayed are representative of three replicates (N=3). Scale bars =200 µm (B, G), 20 µm (C, D, E, H, I, J), and 50 µm (K, L).