Mutations in both gp120 and gp41 are responsible for the broad neutralization resistance of variant human immunodeficiency virus type 1 MN to antibodies directed at V3 and non-V3 epitopes.

Abstract excerpt

The escape of human immunodeficiency virus type 1 from effects of neutralizing antibodies was studied by using neutralization-resistant (NR) variants generated by growing the neutralization-sensitive (NS) wild-type MN virus in the presence of human serum with neutralizing antibodies, more than 99% of which were directed at the V3 region of gp120. The variants obtained had broad neutralization resistance to human...

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