56.根據 CLSI 規範,腦膜炎雙球菌(Neisseria meningitidis)採用瓊脂稀釋法測定抗生素藥敏試驗時,Mü eller-Hinton agar 通常需再額外添加何種物質? (A)5% sheep blood (B)5% lysed horse blood (C)2% NaCl (D)cysteine-free supplements