事实说明恶性肿瘤尤其在晚期导致机体对肿瘤免疫防御功能的削弱。虽然现时已经有多种强化机体免疫功能的方法,但还没有令人信服的临床效果;免疫能力的变化和疾患的预后之间的关系也还未能明确。因此,在德国、比利时、法国和美国学者间进行了讨论,试图说明免疫治疗的实验基础、免疫治疗的目的和免疫治疗的发展方向。 The facts show that malignant tumors, especially in the late stage, lead to weakening of the body’s immune defense function. Although there are many ways to strengthen the body’s immune function, there is no convincing clinical effect; the relationship between the changes in immunity and the prognosis of the disease has not yet been clarified. Therefore, discussions were held among scholars from Germany, Belgium, France, and the United States to try to explain the experimental basis of immunotherapy, the purpose of immunotherapy, and the direction of development of immunotherapy.