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b型流感杆菌（Hib）偶联菌苗的分子大小分布与其免疫原性密切相关,也是检测菌苗批间稳定性的常规指标。以往所用的凝胶
The molecular size distribution of Hib conjugate bacterium vaccine closely correlates with its immunogenicity and is also a routine indicator of the stability of the bacterium vaccine. The gel used in the past