Nanovaccines A cancer cell membrane@porous silicon nanoparticles@Au nanovaccine is developed by Zhenyang Luo, Hélder A. Santos, Bing Xia, and co-workers in article number 2108012, based on weak-immunostimulatory porous silicon@Au nanoparticulate cores and multi-antigenic cancer cell membranes. These exogenous nanovaccines boost antitumor immunity, preventing the occurrence of solid tumors, and significantly inhibiting the growth and metastasis of solid tumors after photothermal therapy combined with immune checkpoint inhibitors.