the expression of the tumor marker antigen ca 50 , defined by the monoclonal antibody ( mab ) c 50 , was studied by the immunoperoxidase technique in formalin-fixed , paraffin-embedded tissue sections from normal pancreata , from pancreata with pancreatitis and from benign and malignant pancreatic neoplasms .
C0030274
pancreata
C0346647
malignant pancreatic neoplasms