Preview Smallpox Virus, TEM Image ID: 1349-638 Artist: Science Source Purchase a commercial license Buy framed prints & more from our print store abnormal colorized disease em enhanced fatal disease histopathology infectious disease micrograph microorganism microscopic pathogen pox virus pox poxviridae poxvirus red plague smallpox virus smallpox tem unhealthy variola major variola minor variola vera variola virus variola viral disease virus