He hung his hat on a peg and flung himself into his seat with business-like alacrity.

他把帽子挂在钉子上，一本正经地迅速坐到座位上。

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Methods The SGC7901 gastric cancer cells and dendritic cells were induced to be fused by PEG and the pure fusion cells were obtained by selective culture with the HAT/HT culture system.

方法利用聚乙二醇（PEG）诱导SGC7901胃癌细胞、树突状细胞融合，利用HAT、HT筛选培养系统对融合细胞进行筛选培养，获取纯净融合疫苗；

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