Fig. 1

a An illustration showing the antibody cocktail-conjugated magnetic nanowires (Abs_MNWs) used for the isolation of circulating exosomes. b Scanning electron microscopy (left: scale bar, 500 nm) image and transmission electron microscopy (right: scale bar, 500 nm and bottom: scale bar, 100 nm) image of Abs_MNWs. c Magnetic hysteresis loop of magnetic nanowires (MNWs) and bare nanowires (NWs) at room temperature