title: Optimization of human immunodeficiency virus type 1 envelope glycoproteins with V1/V2 deleted, using virus evolution.
mesh_terms: D019020:Directed Molecular Evolution; D015483:HIV Antibodies / Q000276:immunology; D015488:HIV Antigens / Q000235:genetics / Q000276:immunology; D015497:HIV-1 / Q000235:genetics* / Q000254:growth & development / Q000276:immunology / Q000302:isolation & purification*; D006801:Humans; D008958:Models, Molecular; D009154:Mutation; D009500:Neutralization Tests; D017434:Protein Structure, Tertiary; D017384:Sequence Deletion; D054299:env Gene Products, Human Immunodeficiency Virus / Q000235:genetics* / Q000276:immunology*
chemical_list: D015483:HIV Antibodies; D015488:HIV Antigens; D054299:env Gene Products, Human Immunodeficiency Virus