Keywords: Bubblegram.jpg en In the background cryo-electron micrographs of purified viruses with their inner structure bubbling from radiation damage Overlaid left 3D computer reconstruction of a virus's outer shell and tail in gray with the inner structure in magenta; right blow-up of the inner viral structure in magenta National Institute of Arthritis and Musculoskeletal and Skin Diseases NIAMS 2012-01-10 11 42 56 National Institutes of Health NIH National Institutes of Health NIH PD-USGov Uploaded with UploadWizard Cell biology Viruses |