TOPICS: CD4+ helper T cells, CD8+ cytotoxic T cells, major histocompatibility complex (MHC) class I, major histocompatibility complex (MHC) class II, CD3, antibodies, cytokines, B cells, HLA genes, alpha subunits, beta subunits, B2 microglobulin, short chain long chain, nucleated cells, platelets, antigen presenting cells (APCs), transporter associated with antigen processing (TAP), rough endoplasmic reticulum (RER), endosome, CLIP, CD8+ cytotoxic T cell activation, Fas, Fas ligand (FasL), perforin, granzyme, TCR, antigen, antigen presentation on MHC I, bare lymphocyte syndrome, antigen presentation on MHC II, proteasome, lysosome, phagolysosome, phagosome, invariant chain, human chromosome 6, HLA subtype associations, hemochromatosis, Addison’s disease, myasthenia gravis, Graves’ disease, psoriatic arthritis, ankylosing spondylitis, IBD-associated arthritis, reactive arthritis, psoriasis, celiac disease, multiple sclerosis, hay fever, systemic lupus erythematosus (SLE), Goodpasture’s syndrome, diabetes mellitus type I, Hashimoto’s disease, rheumatoid arthritis, HLA-DR5, HLA-DR4, HLA-DR3, HLA-DR2, HLADQ2/HLA-DQ8, HLA-C, HLA-B27, HLA-B8, HLA-A3