Fig. 4From: Effective capture of circulating tumor cells from an S180-bearing mouse model using electrically charged magnetic nanoparticlesFluorescence images of NP+ bound to MDA-MB-231/GFP cells in PBS. a Phase-contrast and fluorescence images of MDA-MB-231/GFP cells bound with NP+. b A representative fluorescence image of a captured cell. DAPI was used to stain cell nuclei. TRITC was used to label the NPs. BF Bright fieldBack to article page