CD8A and cancer: Meanwhile, the treatment promoted the proliferation of T cells, facilitated the activation of NK cells and CD8+ CLTs (CD3+CD8+CD107a), as well as upregulated the number of IFN‐γ spot‐forming cells in the spleen (Figure 3d–g).[85] As vaccines are one of utmost important weapons for modern medicine to fight against various diseases, this unique nanovaccine‐loaded gel would change the current situation of repeated vaccine injections and provide new strategies for cancer treatment.