3.5 Influence of indoxyl on the morphology ofS. aureus
SEM was used to confirm the influence of indoxyl on cell morphology. As shown in Fig. 4, the untreated cells were complete spheres with a smooth surface. After treatment with indoxyl, the cells had wrinkles with irregular shapes (Fig. 4c, d). Moreover, some fragments of cells could be found in the images, indicating that the indoxyl destroyed the integrity of the cells.