Equal levels of gp120 retention and neutralization resistance of phenotypically distinct primary human immunodeficiency virus type 1 variants upon soluble CD4 treatment.

Abstract excerpt

Human immunodeficiency virus type 1 (HIV-1) variants passaged in T-cell lines, often called laboratory isolates, are potently neutralized by soluble CD4 (sCD4), whereas primary HIV-1 variants are highly resistant to sCD4 neutralization. Previously, it was demonstrated that the domain from V1 to V3 of the HIV-1 gp120 molecule contains one of the major determinants of sCD4 neutralization sensitivity, and the same...

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