title: HIV IgM antibodies in risk groups who are seronegative on ELISA testing.
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis*; D017977:Deltaretrovirus / Q000276:immunology*; D004797:Enzyme-Linked Immunosorbent Assay; D005500:Follow-Up Studies; D015483:HIV Antibodies; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis*; D011446:Prospective Studies; D012306:Risk; D019966:Substance-Related Disorders / Q000276:immunology*
chemical_list: D000914:Antibodies, Viral; D015483:HIV Antibodies; D007074:Immunoglobulin G; D007075:Immunoglobulin M