Accumulating evidence indicate that the immunogenicity of tumor cells pulsed with B7 molecules is enhanced and the anti-tumor immune reponse of the host is boosted subsequently.

• 越来越多的证据表明B7家族包括B7.；l、B7．2导入瘤细胞后会增强肿瘤的免疫原性从而增强了机体的抗肿瘤免疫反应。