Fig. 2
Characterization of MBs. A Mean diameters of MBcon and MBTNF-α. B Mean zeta potentials of MBcon and MBTNF-α. (NS, nonsignificant). C Observation of the structures of MBTNF-α using inverted fluorescence microscopy (× 400, scale bar = 50 μm). a The lipid shells of MBs were stained with DiI. b Alexa Fluor 488-labeled secondary antibodies were used to locate TNF-α antibodies. c Merged image. d Bright field image