[单选题]关于ABO血型，错误的说法是

正确答案 ：D

人体分泌液和体液中都存在A、B、H物质

[多选题]骨髓病性贫血可继发于

正确答案 ：AB

肿瘤骨转移

骨髓纤维化

[单选题]常用细胞化学染色观察结果的部位是 ( )

正确答案 ：D

细胞质内

[单选题]A patient has a prolonged APTT and anormal PT. The APTT is not corrected by factor Ⅷ-deficient plasma but is corrected by factor Ⅸ-deficient plasma. Which factor does the patient appear to be deficient in

正确答案 ：C

FactorⅧ

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