After 10 days,we found that there was higher level of IL-2 in the superantant of the peritoneal cell cultured in vitro, The macrophage cytotoxicity,splenocyte proliferation,NK activity,LAK activity were all augmented significantly after i.p.

• 同时经脂质体转染IL－2基因的脾脏细胞具有较高的内源性LAK活性。