title: Among the human antibodies reacting with intracytoplasmic a particles of mouse mammary tumor virus, some react with MMTV p14, the nucleic-acid-binding protein, and others with MMTV p28, the main core protein.
abstract: Human IgG antibodies reacting in the indirect immunofluorescence test with clusters of intracytoplasmic A particles in mouse tissues were analyzed by means of both radioimmunoprecipitation and enzyme-linked immunoabsorbant assays. Generally, antibody-containing sera reacted with epitopes of p14, the nucleic-acid-binding core protein of mouse mammary tumor virus, corresponding to the protein Ap14 of intracytoplasmic A particles. Comparatively few sera reacted with epitopes of the main core protein p28 corresponding to the protein Ap28 of intracytoplasmic A particles. The two types of reactivity occurred independently of each other.
mesh_terms: D002460:Cell Line; D004797:Enzyme-Linked Immunosorbent Assay; D005455:Fluorescent Antibody Technique; D006801:Humans; D007074:Immunoglobulin G / Q000276:immunology*; D007181:Inclusion Bodies, Viral / Q000276:immunology*; D008324:Mammary Tumor Virus, Mouse / Q000276:immunology*; D014764:Viral Proteins / Q000276:immunology*
chemical_list: D007074:Immunoglobulin G; D014764:Viral Proteins