CD8A and neoplasm: Salmonella Typhimurium infection can recruit abundant immune cells, such as neutrophils, macrophages, dendritic cells (DCs), and CD8+ T cells into the tumor microenvironment (TME); it can also induce the expression of pro-inflammatory cytokines to enhance the antitumor immune response (Cheng et al., 2014; Kim et al., 2015).