CD4 and neoplasm: Flow cytometry analysis uncovered that the infiltration of CD3+, CD4+ and CD8+ T cells was increased in treated tumours, among which the IR700@Nb289‐OMVs and NIR combo treatment resulted in the highest T cell recruitment, and no significant difference was observed between Nb289‐OMVs and IR700@Nb289‐OMVs treatment (Figure 4A–E and Figure S17).