when an e. coli chemotransducer gene ( tare ) , the product of which is required for both aspartate and maltose chemotaxis , was introduced by using a plasmid vector into s. typhimurium cells with a defect in the corresponding gene ( tars ) , the transformant cells acquired the ability for both aspartate and maltose chemotaxis .
C0007634
cells
C0008018
chemotaxis