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(a) Scheme of microcapsule preparation: 1, 3–adsorption of Parg, 2–adsorption of Dex, 4–adsorption of magnetite nanoparticles (MNP)s, 5–dissolution of core, 6–magnetic polyelectrolite microcapsule. (b) Optical and transmission electron microscopy (TEM) (inset figure) images of biodegradable microcapsules containing magnetite MNPs.
