3D stereoscopic anaglyph (view with red-green or red-cyan glasses). Hepatitis C Virus (HCV) is a small enveloped + single stranded RNA virus in the family Flaviviridae (L. Flavus: yellow named after Yellow Fever) in the genus Hepacivirus. The radiating spikes represent E (Envelope) proteins. Each spike is a dimer of E1 and E2 anchored into the viral envelope. This viral envelope is derived from host cell ER membrane. Below that is the core (C) proteins. The core contains the RNA genome.