Fig. 1From: Biosynthesis, characterization of PLGA coated folate-mediated multiple drug loaded copper oxide (CuO) nanoparticles and it’s cytotoxicity on nasopharyngeal cancer cell linesSEM of (a) CuO NPs; b FOL-PLGA-CuO NPs; c CD-1; d CD-2; e CD-3. Note the irregularities in size and shapes of CuO NPs in (a). Upon incorporation of drugs the shapes gradually become spherical with agglomeration of particlesBack to article page