Transmission electron micrographs of a untreated Staphylococcus aureus ATCC 6538P and b cells of the same strain treated with 0.027 µg/mL (0.33×MIC) cephaloridine for 6 h. Treatment has inhibited cell separation, resulting in a pseudomulticellular form. Magnification for a ×23,500 and b ×21,500. Bar 1 µm.
Images from [125] by permission of Antimicrobial Agents and Chemotherapy (ASM)