Fig. 3From: Effective capture of circulating tumor cells from an S180-bearing mouse model using electrically charged magnetic nanoparticlesComparison of MDA-MB-231/GFP cell binding capacity of NP+ and NP− in PBS. Phase-contrast images (a, b, c, d) of NP+ bound to MDA-MB-231/GFP cells (left). The right images (e, f) only show NP−, revealing a lack of binding capacity to MDA-MB-231/GFP cellsBack to article page