title: Quantitation of antibodies to extractable nuclear antigens (ENA) by hemagglutination: a useful modification.
mesh_terms: D000974:Antibodies, Antinuclear / Q000032:analysis*; D003095:Collagen Diseases / Q000276:immunology*; D004912:Erythrocytes / Q000187:drug effects / Q000276:immunology; D005069:Evaluation Studies as Topic; D005976:Glutaral / Q000494:pharmacology; D006386:Hemagglutination Tests / Q000379:methods*; D006801:Humans; D008947:Mixed Connective Tissue Disease / Q000276:immunology
chemical_list: D000974:Antibodies, Antinuclear; D005976:Glutaral