细菌外毒素是一类蛋白质能刺激宿主产生免疫应答形成能中和外毒素毒性的抗毒素外毒素性质不稳定脱去毒性后称为类毒素可用于预防接种下列叙述 Template




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tomski细菌外毒素是一类蛋白质能刺激宿主产生免疫应答形成能中和外毒素毒性的抗毒素外毒素性质不稳定脱去毒性后称为类毒素可用于预防接种下列叙述 coloring