Development of Development of M2 macrophage selective probe, CDg18 a. The M2 macrophage selectivity of CDg18 through the image-based screening. b. The merged histogram image of the CDg18 treated M0 (red), M1 (blue), M2 (orange) macrophage cells. The graph shows the CDg18 intensity on each type of macrophage by flowcytometry. c. Colocalization image with Nile Red and CDg18. The images were taken using operetta CLS with x 20 objective lens. Scale bar: 20 μm.