to clarify the frequency of the expression of hla-dr antigens on the human small intestinal epithelium and the variation of such expression , 43 specimens ( duodenum 16 , jejunum 8 , ileum 19 ; histologically normal 33 , pathologic lesions 10 ) were studied for hla-dr expression by indirect immunoperoxidase staining using monoclonal antibodies against hla-dr antigens .
C0086418
human
C0019764
hla-dr antigens