16.下列关于抗原的叙述中正确的是 A.机体本身的细胞不可能成为抗原 b.抗原只有突破人体的前面两道防线才会引起特异性免疫反应 Template




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tomski16.下列关于抗原的叙述中正确的是 a.机体本身的细胞不可能成为抗原 b.抗原只有突破人体的前面两道防线才会引起特异性免疫反应 coloring