The ScFv immunotoxin in inclusion was refolded to form correct structure through denaturation and renaturation showed specific and cytotoxic to gastric cancer cell line MGC803.

• 经包涵体纯化、变性、复性，使其折叠为正确的空间结构，经检测可与胃癌细胞MGC803特异结合，并有一定的细胞毒性。