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Characterization of silver nanoparticles formed with 1 mM AgNO3 and 5% Dioscorea bulbifera tuber extract at 40°C by transmission electron microscopy. (A) Silver nanotriangles and nanorods, (B) anisotropic silver nanoparticles, (C), silver nanohexagon, and (D) irregular silver nanoparticles.
