After co culture with tumor cells at different ratio, tumoricidal activity of PBMC was higher in IL 18 group ( P =0.016).

• PBMC与不同效靶比的肿瘤细胞共同温育后 ；IL 18组PBMC对肿瘤细胞杀伤率较对照组为高 (P=0 .；0 16 ) ;