expression of ras p21 in human gastric cancers , benign lesions ( i.e . dysplasia , intestinal metaplasia and hyperplastic polyps ) and normal tissues was immunohistochemically evaluated by the avidin-biotin complex ( abc ) immunoperoxidase method with anti-ras p21 monoclonal antibody ( rp-28 ) .
C0086418
human
C0034678
ras