Figure 1From: Nano-biolistics: a method of biolistic transfection of cells and tissues using a gene gun with novel nanometer-sized projectilesNanoparticles and microparticles. Electron microscope images of microparticles (left hand panel; scale bar = 1 μm) and nanoparticles (right hand panel; scale bar = 40 nm) to show their comparative sizes. The particles in these images were coated with DNA and have hydrodynamic diameters of 40 and 991 nm respectively.Back to article page