14.下列何項試驗,最不適合用來鑑定Streptococcus agalactiae?
(A)在New Granada medium(NGM)產色素(carotenoid pigment)之能力
(B)CAMP test
(C)Hippurate hydrolysis test
(D)Susceptibility to Sulfamethoxazole-Trimethoprim
18.Gram-positive cocci做catalase test時,若反應不確定,下列何項試驗有助於確認?
(A)Vancomycin感受性試驗
(B)Benzidine test or porphyrin test
(C)Modified oxidase test
(D)測試菌與3% KOH混合,觀察是否會產生黏絲
14 有少數 Enterococcus faecalis 因產生 β-lactamase 而對青黴素具高度抗藥性,下列何種方法最能有效偵
測此種抗藥性?
(A) Penicillin disk diffusion test (B) Oxacillin disk diffusion test
(C) Nitrocefin test (D)以 broth dilution 方法測 oxacillin MIC