Colorectal Cancer
Copyright ©2007 Baishideng Publishing Group Co.
World J Gastroenterol. Mar 21, 2007; 13(11): 1659-1665
Published online Mar 21, 2007. doi: 10.3748/wjg.v13.i11.1659
Figure 1
Figure 1 Expression of cytokeratin AE1/AE3 and PCNA in primary colorectal adenocarcinomas. We performed immunohistochemistry with cytokeratin AE1/AE3 antibodies showing positive staining in cytoplasm of colorectal normal crypts (A) and malignant crypts (B) (positive in brown). While the proliferation marker PCNA stained the nuclei of the normal (C) and tumor (D) tissues (positive in brown). E is the negative control.