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Proteins on the surface of a human cell and on a bird influenza virus are represented in the diagram below. Describe a change in the bird influenza virus that would allow it to infect this human cell.

Proteins on the surface of a human cell and on a bird influenza virus are represented in the diagram below Describe a change in the bird influenza virus that wo class=

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Answer:

Viral proteins can modify the most superficial portion in such a way that it is complementary to the receptor of the human cell.

Generally this happens due to a genetic recombination between an avian virus and a human virus within the respiratory epithelium of the pig: this process underlies the emergence of new, more virulent strains of the influenza virus and underlies the emergence of influenza pandemics

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