Figure 1.

Average (A) diameter and (B) concentrations (#particle/mL) across all BEV extracts as measured by NTA and BCA. Each point represents one unique sample (N = 10). The mean diameter and concentration across all isolates are 213.9 nm and 3.2 × 10¹¹ particles/mL, respectively. (C) High magnification transmission electron microscopy (TEM) of isolated BEVs using negative staining (top) and positive staining (bottom) with visible lipid membrane structure. BEVs ranged from 30 to 200 nm, supporting NTA data. Scale bars = 20 nm (top), 50 nm (bottom).