When sATR molecules are mixed into the medium surrounding cells, they serve as effective decoys, tricking protective antigen into binding to them instead of to its true receptor on cells.

• 当sATR溶到细胞外面的液体时，它们成了有效的诱饵，会诱拐保护抗原结合过来，而不是结合到细胞表面它的真正受体。