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Ability of HP-OVA to inhibit the interaction between sCD4 and CD4-binding proteins. The inhibitory activities of sCD4 binding to gp120 from HIV-1IIIB (A), gp120 from HIV-1BaL (B), and anti-CD4 MAb Q4120 (C) were determined by ELISA. Each sample was tested in triplicate, and the data are presented as means ± standard deviations.
