The phagocytosed number of 4T1 tumor cells by 100 macrophages was quantified in vitro, and equivalent phagocytose (>100 4T1 cells) was induced by anti‐CD47‐PCM@NP compared with direct treatment of anti‐CD47, in contrast to the single‐digit uptake in the PCM@NP group (Figure4A and Figure S14, Supporting Information). Here, CD47 is linked to neoplasm.