This transmission electron micrograph (TEM) revealed some of the morphologic details displayed by the Colorado tick fever virus (CTFV), a member of the genus Coltivirus, one of nine genera of the virus family known as the Reoviridae. Coltivirus particles are ˜80 nm in diameter and have a core ˜50 nm in diameter. Electron microscopic studies have shown particles with a relatively smooth capsomeric surface structure, and icosahedral symmetry.
Created: 1975