an immunohistochemical examination by the avidin-biotin-peroxidase complex method was carried out to assess the expression of oncogene-related products , i.e. , ras p 21 protein , fes p 85 protein and epidermal-growth-factor ( egf ) receptors , in human gastrointestinal malignancies .
C0027021
peroxidase
C0086418
human