Virion Properties
Morphology
Virions consist of a capsid. Virus capsid is not enveloped. Capsid/nucleocapsid is elongated with helical symmetry. The capsid is filamentous, flexuous with a clear modal length with a length of 800 nm and a width of 12-15 nm. Axial canal is indistinct. Basic helix is obscure.
Electron microscopic preparation and references: Virus preparation contains few virions.