Fig. 5From: Using Positively Charged Magnetic Nanoparticles to Capture Bacteria at Ultralow ConcentrationFluorescent and TEM images of E. coli binding with NP+. a Upper panels show the fluorescent images of E. coli cells binding with NP+. DAPI is used to stain the cell nucleus. TRITC is labeled in NPs. b Lower panels are representative TEM images showing NP+ and E. coli complexesBack to article page