【单选题】
血中胆红素的主要运输形式是：___
A. 胆红素–清蛋白
B. 胆红素–Y蛋白
C. 胆红素–葡萄糖醛酸酯
D. 胆红素–氨基酸
E. 胆素原
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答案
A
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【单选题】
以IP3和DAG为第二信使的双信号途径是___
A. cAMP－蛋白激酶途径
B. Ca2+‐磷脂依赖性蛋白激酶途径
C. cGMP‐蛋白激酶途径
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A. Gly、Ser、Val
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C. Ala、Ile、Leu
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