X-VIVO 15 Media are similar in composition to X-VIVO 10 Media and have been optimized for the proliferation of tumor infiltrating lymphocytes (TIL) under serum-free conditions X-VIVO 15 Media support the proliferation of purified CD3 cells isolated from peripheral blood and human tumors X-VIVO 15 Media can also be used to support the growth of human monocytes macrophage cells and cell lines PBL granulocytes and natural killer (NK) cells In addition X-VIVO 15 Media provide a serum-free environment for the expansion of HUT-78 and related human lymphocytic cell lines All BioWhittaker Cell Culture Media products are for Research Use Only (RUO) and are not approved for human or veterinary use or for use in clinical or in vitro diagnostic procedures