This illustration depicted a 3D computer-generated rendering of a whole influenza (flu) virus, rendered in semi-transparent blue, atop a black background. Inside of the virus, its ribonucleoproteins (RNPs) were shown in white, with their coiled structures, and three-bulbed polymerase complex on the ends. An influenza virus’ RNP is composed of both RNA and protein. Every influenza virus has eight RNP segments, corresponding to the virus’ eight total gene segments. Three of these RNP segments encode the virus’ surface proteins, i.e., the HA, NA and M proteins.