ITGAE and neoplasm: The density of CD103+ CD11b− cDC1s in TdLNs after hydrogel microsphere vaccine treatment was ~1.5-, 1.3-, 1.3- and 1.2-fold higher than that of the Group1, Group2, Group3 and Group4 counterparts, respectively (Fig. 4k), demonstrating that the vaccine amplified the migration of tumour-resident CD103+ CD11b− cDC1s into TdLNs.