Fig. 1From: Recent advances in porous nanomaterials-based drug delivery systems for cancer immunotherapy(Adapted from [127])The immuno-oncology cycle. This cycle is comprised of seven parts, including the release of cancer cell antigens, antigen presentation by mature antigen presenting cells (APCs), T cell activation, T cell trafficking and infiltration into tumor sites, and the recognition and killing of cancer cells by cytotoxic T cells (CTLs).Back to article page