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HUVECs coated with 40 nm nanoparticles form tubular-like structures on Matrigel. Confocal microscopy images were taken of HUVECs (green) coated with nanoparticles (red) after 24 hr of growth. (a) A network of HUVECs. (b) A higher magnification image. (c) A 3D reconstructed confocal image of HUVECs coated with nanoparticles.
