Figure 5. M1/M2 macrophage phenotype distribution in the host immuneresponses to the porcine liver matrices at 7 days and 21 days post-surgery.

Representative immunofluorescent images presenting host macrophage polarization responses to liver matrix materials 7 days (a–h) and 21 days (i–p) post-implantation. M1 cells were co-stained with CCR7 and CD68, and M2 cells were co-stained with CD206 and CD68. Scale bars = 100 μm. CCR7/CD206 = red; CD68 = green; DAPI = blue.