Purity ≥95% (SDS-PAGE, reduced). Purified by immunoaffinity chromatography. Gene cloned from Macrophage-cell-tropic HIV-1 YU2 strain and the full length recombinant envelope gp120 glycoprotein produced in the Baculovirus Expression System. Applications: Suitable for use in ELISA, Western Blot, CD4 binding and Cell activaton.