Biology, asked by pawandhar1511, 9 hours ago

viruses are considered as Enigma . why ?

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Answered by dhruvohlan403

1

Answer:

A major enigma of influenza virus is whether alteration of viral specificity for host cell receptors (sialic acids) can generate a pandemic strain of virus. The viral hemagglutinin surface glycoprotein preferentially binds to certain sialic acid residues on host cells, making hemagglutinin a determinant of host range.

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