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Figure 1 | Source Code for Biology and Medicine

Figure 1

From: VIRAPOPS2 supports the influenza virus reassortments

Figure 1

Antigenic shift explains H7N9 emergence. A. Scheme of flu virus. (gray color will be kept as meaningful for domestic duck). 1. 8 RNA segments of the viral genome. 2. Haemagglutinin (HA) coding segment. 3. Neuraminidase (NA) coding segment. 4. HA protein 5. NA protein. B. Wild bird flu virus. C. Domestic poultry flu virus. D. Sometimes, H7N9 virus made by avian RNA segment reassortment, can infect human. Note: the combination of the 16 H types and 9 N types can generate 144 different subtypes [9].

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