Fig. 5

Transmission electron microscopic (TEM) (11,000X) images of Staphylococcus pasteuri (Gram-positive) and Proteus mirabilis (Gram-negative) as treated with 2xMICs of meropenem, SaO-Fe3O4NPs, and SaO-SeNPs compared to untreated control. Red arrows indicate extracellular deformation, while yellow arrows highlight intracellular alterations.