20.Viridans streptococci中,下列何群具有group D antigen?
(A)S. anginosus group
(B)S. bovis group
(C)S. mutans group
(D)S. salivarius group
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統計: A(152), B(1636), C(259), D(66), E(0) #2744800
統計: A(152), B(1636), C(259), D(66), E(0) #2744800