Figure 1
From: Expression of a novel carbonic anhydrase, CA XIII, in normal and neoplastic colorectal mucosa
Immunohistochemical staining of CA I, II and XIII in the normal colonic mucosa and tumors. The samples of normal mucosa, adenoma (grave dysplasia) and well differentiated adenocarcinoma were collected from one patient. The strongest immunoreaction is located in the enterocytes of the normal mucosa (arrows). Original magnification × 200.