Fig. 3
From: Microfluidic nanobubbles produced using a micromixer for ultrasound imaging and gene delivery

Characterization and stability of MF-NBs. (a) Visualization of the lipid solution (left) and MF-NBs (right). (b) Cryo-EM image of MF-NBs (scale bars, 100 nm). (c) Particle size distribution measured by laser diffraction. (d) Particle concentration 1 week after preparation (1-week-old) compared to the initial preparation (Fresh). (e) Particle size of Fresh MF-NBs and 1-week-old MF-NBs.