False-colour transmission electron micrograph (TEM) of virions (virus particles) of the rubella or German measles virus (pink spheres). Individual virions consist of an icosahedral protein coat or capsid, 20-40 nanometers in diameter, surrounded by an outer lipoprotein envelope. The capsid encloses the virus genome; genetic information in the form of single-stranded RNA. The german measles virus belongs to the togavirus (formerly arbovirus) family of viruses. Magnification: x65,000 at 6x7cm, x32,500 at 35mm size.