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临床分离的幽门螺杆菌至少可分为两型:Ⅰ型幽门螺杆菌产生空泡形成细胞毒素(VacA)。该毒素使上皮细胞形成空泡,是一种起免疫作用的细胞毒相关抗原(CagA),Ⅱ
Helicobacter pylori clinically isolated can be divided into at least two types: Helicobacter pylori produces vacuolization to form cytotoxin (VacA). The toxin causes the epithelial cells to form vacuoles, is an immunogenic cytotoxic antigen (CagA), II