43.某衛生所通報疑似有群體感染大腸桿菌O157:H7,O是指:
(A)莢膜多醣(capsular polysaccharides)
(B)鞭毛(flagella)
(C)菌體(somatic)抗原
(D)台口酸(teichoic acid)
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統計: A(441), B(111), C(2038), D(47), E(0) #1840411
統計: A(441), B(111), C(2038), D(47), E(0) #1840411