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TEM micrographs of (A) maghemite (nonspray-dried iron oxide NPs), (B) hematite (spray-dried iron oxide NPs), (C) PCL–CIP–maghemite microsphere, and (D) PCL–CIP–hematite microsphere.
Abbreviations: TEM, transmission electron microscope; NPs, nanoparticles; PCL, polycaprolactone; CIP, ciprofloxacin.
