Skip to main content
. 2013 Sep 26;8(9):e76544. doi: 10.1371/journal.pone.0076544

Figure 4. Concentration and size distribution of fresh prepared and washed MBs.

Figure 4

(A) Concentrations of freshly prepared and washed MBs with various amounts of Stearic-PEI600. (B) Size distribution of freshly prepared MBs with various amounts of Stearic-PEI600. (C) Size distribution of 10 mM NaCl washed MBs with various amounts of Stearic-PEI600. (D) Mean and median size of fresh prepared and 10 mM NaCl washed versus the Stearic-PEI600 fraction. The “freshly prepared” MBs were taken straight from the vial within 1 h of formation. The “washed” MBs were obtained by three cycles of flotation-centrifugation with infranatant exchange to remove the submicrometer bubbles.