10 下列何者為活體染色（Supravital stain）常用的染劑？ ① New methylene blue ②Brilliant cresyl blue③ Methylene blue④ Prussian blue
(A)①③
(B)②④
(C)①②
(D)③④

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統計： A(2), B(4), C(12), D(1), E(0) #2990529