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Characterization of size, morphology, and protein Ag coating of biodegradable microparticles. A, Particle diameter of replicate batches was determined using a Zetasizer. B, Representative SEM image of microparticles. C, Surface charge (zeta potential) of replicate batches of blank and OVA-coated particles. D, Detection of FITC-OVA adsorbed onto microparticles.
