title: Defective interfering virus particles and their biological functions.
mesh_terms: D000914:Antibodies, Viral / Q000096:biosynthesis; D000998:Antiviral Agents / Q000494:pharmacology*; D002872:Chromosome Deletion; D003602:Cytotoxicity, Immunologic; D005814:Genes, Viral; D007372:Interferons / Q000096:biosynthesis; D009154:Mutation; D013601:T-Lymphocytes / Q000276:immunology; D014764:Viral Proteins / Q000235:genetics*
chemical_list: D000914:Antibodies, Viral; D000998:Antiviral Agents; D014764:Viral Proteins; D007372:Interferons