Figure 2.

Physical and molecular characteristics of the tomato NVs subpopulations. (a) The distribution of protein quantity over the iodixanol density gradient ultracentrifugation (DGUC) fractions (normalized for 1 mg of loaded NVs sample, n = 3); (b) number of particles in each fraction; (c) sodium dodecyl sulfate–polyacrylamide gel electrophoresis protein profiles of tomato NVs and fractions separated by iodixanol DGUC (the loaded protein quantity for each fraction was 10 µg, except Fraction 1, 11 and 12, for these fractions the protein amount was around 1 µg); (d) the particle to protein ratio in each fraction.