CD47 and neoplasm: We observed that tumor cells receiving combination treatment showed marked increase of phagocytosis compared with doxorubicin (3.6‐fold, P < 0.0001) or CD47 mAb treatments (1.7‐fold, P < 0.0001) both by confocal microscopy (Fig. 1F,G) and by FACS (Fig. 1H,I and Fig. S1).