Fig 1: Characterization of ABR NPs. (A) Analysis of the co-assembly mechanism between BLN and RAP. (B) Size distribution and TEM images of BR NPs, scale bar = 200 nm. (C) Size distribution and TEM images of ABR NPs, scale bar = 200 nm. (D) Zeta potential of BLN, RAP, BR NPs, PEG NPs, and ABR NPs (n = 3). (E) UV-vis spectroscopy of BLN, RAP, BR NPs, PEG NPs, and ABR NPs. (F) BR NPs, PEG NPs, and ABR NPs' colloidal stability after 30 min of incubation in either water or PBS (pH = 7.4) (n = 3). (G) Size distribution and (H) PDI of ABR NPs in PBS (pH = 7.4), PBS with 10 % FBS or 50% mouse serum for 12 h at 37 °C (n = 3).