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TFF1 immunostaining in cancer. The panels show TFF1 positivity in a mucinous carcinoma of the ovary (A), a colorectal adenocarcinoma (B), a pancreatic adenocarcinoma (C), a gastric adenocarcinoma (D), an adenocarcinoma of the cervix (E), urothelial carcinoma of the bladder (F), and a neuroendocrine tumor of the lung (G). TFF1 staining is absent in a hepatocellular carcinoma (H).
