title: High concentrations of recombinant soluble CD4 are required to neutralize primary human immunodeficiency virus type-I isolates.
mesh_terms: D015704:CD4 Antigens / Q000276:immunology*; D015658:HIV Infections / Q000382:microbiology; D015497:HIV-1 / Q000276:immunology*; D006801:Humans; D011994:Recombinant Proteins / Q000276:immunology
chemical_list: D015704:CD4 Antigens; D011994:Recombinant Proteins