Suppression of TNBC lung metastasis by resveratrol may be through elevating local antitumor immunity, as revealed by an increase in the levels of type 1 cytokines, including IFN-γ and IL-2 in the lung and infiltration of CD4+ and CD8+ T cells to the lung of resveratrol-treated tumor bearing mice. Here, CD4 is linked to neoplasm.