This photomicrograph shows multiple virions of the yellow fever virus at a magnification of 234,000x.

Ultrastructural Details of two Avian Influenza A (H5N1) Virions, a Type of Bird Flu Virus
This transmission electron micrograph (TEM), taken at a magnification of 108,000x, revealed the ultrastructural details of two avian influenza A (H5N1) virions, a type of bird flu virus, which is a subtype of avian influenza A. At this magnification, one may note the stippled appearance of the roughened surface of the proteinaceous coat encasing each virion.

Ultrastructural Details of an Avian Influenza A (H5N1) Virion
This transmission electron micrograph (TEM), taken at a magnification of 150,000x, revealed the ultrastructural details of an avian influenza A (H5N1) virion, a type of bird flu virus which is a subtype of avian influenza A. At this magnification, one may note the stippled appearance of the roughened surface of the proteinaceous coat encasing the virion.

Russian Influenza-A H1N1, (A/USSR/90/77 strain)
This transmission electron micrograph (TEM) depicted Russian influenza-A H1N1, (A/USSR/90/77 strain), virions, which had been magnified 189,000x.