Close-up of the H1N1 swine flu vaccine that became availablein late 2009 for immunization against this virus, which is a strain of influenza type A. The 2009 outbreak strain of H1N1 contains genetic material from bird, human, and swine influenza viruses.
Credit
Scott Camazine
Dimensions
4749 x 3864 pixels
Print Size @ 300 dpi
16 x 13 inches / 40 x 33 cm