Stock Photo: Images of the newly identified H1N1 influenza virus taken in the CDC Influenza Laboratory. This preliminary negative stained transmission electron micrograph shows some of the ultrastructural morphology of the A/CA/4/09 swine flu virus

Stock Photo: 4297-1434 Images of the newly identified H1N1 influenza virus taken in the CDC Influenza Laboratory. This preliminary negative stained transmission electron micrograph shows some of the ultrastructural morphology of the A/CA/4/09 swine flu virus