特異性：The beta 2-microglobulin subunit (Mr ~ 14 kDa) of avian MHC Class I molecules Like their mammalian counterparts, avian MHC Class I molecules (also known as B-F antigens) consist of a highly polymorphic alpha -chain (Mr ~ 44 kDa) non-covalently bound to the invariant beta 2-microglobulin subunit (Mr ~ 14 kDa). MHC Class I molecules are expressed on most nucleated cells where they present endogenously synthesized antigenic peptides to CD8+ T lymphocytes, which are usually cytotoxic T cells.1-2 MAb F21-21 also reacts with turkey beta 2-microglobulin.3
