Fig. 4: In vitro characterization of lipid microstructures and in vitro magnetic manipulation.
From: Additive manufacturing of water-soluble 3D micro molds for complex-shaped lipid microparticles

a In vitro accelerated degradation of the lipid microparticle: Optical images of the lipid microparticle immersed in lipase solution at 37 °C over time. b Drug loading efficiency of 5-FU encapsulated in helical lipid microparticles prepared at different leaching temperatures. c In vitro drug release profile of the helix lipid microparticle immersed in PBS at 37 °C (n = 3). d Magnetic hysteresis curve of 30 helix lipid microparticles e Time-lapse images of the magnetic manipulation of a helix lipid microparticle by a rotating magnetic field and the velocity of the lipid microparticles under different rotating magnetic field frequencies (n = 3). f Time-lapse images of the magnetic manipulation of a cubic scaffold lipid microparticles by a magnetic gradient.