This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
HLA allele associated with Graves disease is 
Select and explain. 
A. DR4, B. B27, C. B8, D. DQ8
C: B8
Answer: C: B8 
Explanation: Disease HLA Allele Rheumatoid ahritis DR4 Insulin-dependent diabetes mellitus DR3/DR4` Multiple sclerosis, Goodpasture's DR2 Systemic lupus erythematosus DR2/DR3 Ankylosing spondylitis, psoriasis,inflammatory bowel disease, reactiveahritis B27 Celiac disease DQ2 or DQ8 Graves disease B8 Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno : 180