�年来在疫苗家族中增加了第三代疫苗 dna疫苗它们由病原微生物中的一段表达抗原的基因制成这段基因编码的产物仅是引起机体的免疫反应.以下 Template




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tomski�年来在疫苗家族中增加了第三代疫苗 dna疫苗它们由病原微生物中的一段表达抗原的基因制成这段基因编码的产物仅是引起机体的免疫反应.以下 coloring