Orthomyxovirus, Influenza A Virus, TEM

Numéro d’image : 12650971
Orthomyxovirus, Influenza A Virus, TEM
Negative-stained Transmission Electron Micrograph (TEM) showing a number of Influenza A virions. Influenza A virus causes influenza in birds and some mammals, and is the only species of influenza virus A. Influenza virus A is a genus of the Orthomyxoviridae family of viruses. Strains of all subtypes of influenza A virus have been isolated from wild birds, although disease is uncommon. Some isolates of influenza A virus cause severe disease both in domestic poultry and, rarely, in humans. Occasionally, viruses are transmitted from wild aquatic birds to domestic poultry, and this may cause an outbreak or give rise to human influenza pandemics. Influenza A viruses are negative-sense, single-stranded, segmented RNA viruses. The several subtypes are labelled according to an H number (for the type of hemagglutinin) and an N number (for the type of neuraminidase). There are 18 different known H antigens (H1 to H18) and 11 different known N antigens (N1 to N11).
Licence : Droits gérés
Crédit: Science Photo Library / Science Source
Taille de l’image : 3074 px × 4500 px
Model Release : Non requis
Property Release : Non requis
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