小鼠B7-1和B7-2基因转染EL4细胞瘤苗抗肿瘤免疫作用的比较研究
소서B7-1화B7-2기인전염EL4세포류묘항종류면역작용적비교연구
Anti-tumor immunity of mouse B7-1 and B7-2 vaccine: a comparative study
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