Influenza viruses

Influenza viruses

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Credit: DR LINDA STANNARD, UCT/SCIENCE PHOTO LIBRARY

Caption: Influenza viruses. Coloured transmission electron micrograph (TEM) of influenza ('flu) viruses. The 'flu virus belongs to the orthomyxovirus group of viruses. It contains a core of RNA (ribonucleic acid) genetic material inside a protein coat or capsid. Spikes form a fringe (dark green) around the capsid and allow the virus to attach to its host cell. Influenza is an infection of the respiratory tract. It causes a fever, aching muscles, a sore throat and weakness. Mutant strains of influenza sometimes appear, which can cause fatal epidemics. Magnification unknown.

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Keywords: biology, coloured, flu, green, influenza, medical, medicine, microbiology, micrograph, orthomyxovirus, pathogen, ribonucleic acid, rna, tem, transmission electron, virology, virus, viruses

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