H3N2, Hong Kong Flu Virus, TEM

Bildnummer 12655268
H3N2, Hong Kong Flu Virus, TEM
Colour enhanced negative-stained Transmission Electron Micrograph (TEM) revealing the presence of a number of Hong Kong flu virus virions, the H3N2 subtype of the influenza A virus. This virus is a Orthomyxoviridae virus family member, and was responsible for the flu pandemic of 1968-1969, which infected an estimated 50, 000, 000 people in the United States, killing 33, 000. Note the proteinaceous coat, or capsid, surrounding each virion, and the hemagglutinin-neuraminidase spikes, which differ in terms of their molecular make-up from strain to strain. There are 16 known HA subtypes and 9 known NA subtypes of influenza A viruses. Many different combinations of HA and NA proteins are possible. Each combination represents a different subtype. All known subtypes of influenza A viruses can be found in birds.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Science Source
Bildgröße: 4459 px × 3353 px
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