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【多选题】
作用于二氢叶酸还原酶的药物有（ ）。A.
奎宁
B.
磺胺甲嗯唑
C.
乙胺嘧啶
D.
氨曲南
E.
甲氨蝶呤
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反馈参考答案：
举一反三
【简答题】教材 P31 第 1-1 。
【多选题】A hematopoietic stem cell is defined as
A.
a cell with extensive self-renewal and proliferative potential
B.
a cell only to produce daughter cells with identical characteristics
C.
a cell with the capacity to differentiate into the progenitors of all the blood cell lineages
D.
a cell With the capacity to produce some hematopoietic growth factors such as SCF，GM-CSFs，et．a1．
E.
a cell with the capacity to express some specific surface antigens such as CD34
【单选题】the hematopoietic stem cell originate from:
A.
neural crest
B.
somatopleure
C.
neural tube
D.
mesoderm
E.
york sak
【单选题】Hematopoietic stem cells are
A.
Totipotent
B.
Pluripotent
C.
Multipotent
D.
Unipotent
E.
Terminal differentiated
【简答题】P31,1/3/6
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