to clarify the cellular origin of kc-bound hla-dr antigens , we used a monoclonal antibody directed against determinants solely expressed on the cytoplasmic hla-dr gamma chain ( vic-y1 ) and observed that , by immunofluorescence , kc displaying hla-dr alpha/beta complexes on their surface uniformly displayed cytoplasmic vic-y1 reactivity .
C0007634
cellular
C0022567
bound