pink and blue rubber ball

This illustration provides a 3D graphical representation of a generic Influenza virion’s ultrastructure, and is not specific to a seasonal, avian or 2009 H1N1 virus. See PHIL 11828 for a view of this virus in which a portion of the virion’s protein coat, or “capsid”, has been cut away, revealing its inner nucleic acid core proteins, as well as a key identifying the organism’s protein constituents. Illustrator: Dan Higgins