Fig. 4.
The morphology of Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC29213 were investigated by scanning electron microscopy. a-b The control group. c-d The Escherichia coli ATCC 25922 treated with CHAP. Viscous substances were adhering to almost all CHAP treated cells, which got large number of bacteria together (arrowheads); Some bacteria showed variable length, rough cell surfaces or globular protrusions on their surfaces, and even appeared to collapse (arrows)