The protein of Stx2A was analyzed and purified with polyacrylamide gel electrophoresis and nickel-affinity chromatography colomn.
目的克隆表达肠出血性大肠杆菌(Enterohem orrhagic Escherichia col,i EHEC)O157∶H7志贺样毒素A亚单位(Sh iga-like toxin,Stx2A),并对其初步纯化。
