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* השאלה נוספה בתאריך: 25-08-2024

		The MHC I and b2 microglobulin molecules are antigen specific
		The a1-3 peptide and b2 microglobulin from the peptide binding cleft
		b2 microglobulin is invariable (לא משתנה)
		b2 microglobulin interacts with CD4 on the T cell

MHC I is composed of a polypeptide (a1-3) and b2 microglobulin: