单项选择题
A.肝素 B.EDTA-K2 C.EDTA-Na2 D.草酸钾
A.Southern Blot B.Northern Blot C.Western Blot D.斑点杂交
A.G>A>T>C B.A>T>G>C C.C>G>T>A D.G>C>A>T