title: Which twin has T-cell defect? Graves' study shows for sure.
mesh_terms: D000941:Antigens / Q000276:immunology; D004200:Diseases in Twins; D005260:Female; D006111:Graves Disease / Q000235:genetics* / Q000276:immunology; D006801:Humans; D066298:In Vitro Techniques; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*; D013961:Thyroid Gland / Q000276:immunology
chemical_list: D000941:Antigens