a series of 38 primary laryngeal and hypopharyngeal tumours , 15 lymph-node metastases and normal tissue were evaluated in frozen sections for the expression of mhc class i and ii antigens , using monomorphic monoclonal antibodies ( mabs ) to hla-abc , beta 2-microglobulin , dr , dp , dq , hla-b and polymorphic hla-abc antigens .
C0019737
hla-b
C0019721
hla