NFKB1 and neoplasm: A portion of the portrayed activities of butyrate are enhancements of explicit favorable to apoptotic quality articulation in tumor cells and the decrease of the supportive of incendiary pathway of NF-kB. The immune response is strengthened by probiotics by increasing the cytotoxicity of natural killer cells (NK) and by activating phagocytes. The effectiveness of NK cells can also be improved when a combination of probiotics and dextran is used.