IHC of TTF-1 on an FFPE Lung Tissue
| Intended Use | For In Vitro Diagnostic Use | |||||||||||||||||||||||||||||||||||
| Summary and Explanation | Thyroid transcription factor-1 (TTF-1) is a protein that regulates transcription of genes specific to the thyroid, lung and diencephalon. It is also known as thyroid-specific enhancer binding protein and NKX-2. It is used as a marker to determine if a tumor oringinates in the lung or thyroid. TTF-1 positive cells are found in Type II pneumocytes and Clara cells in the lung. In the thyroid, follicular and parafollicular cells are positive. TTF-1 is useful in differentiating primary Adenocarcinoma of the Lung from Metastatic Carcinomas of the breast and Malignant Mesothelioma. It can also be used to differentiate Small- Cell Lung Carcinoma from lymphoid infiltrates. For lung cancers, Adenocarcinomas are usually positive, while Squamous Cell Carcinomas and Large Cell Carcinomas are rarely positive. Small-Cell Carcinomas (of any primary site) are usually positive. | |||||||||||||||||||||||||||||||||||
| Antibody Type | Mouse Monoconal | Clone | 8G7G3/1 | |||||||||||||||||||||||||||||||||
| Isotype | IgG1 | Reactivity | Paraffin, Frozen | |||||||||||||||||||||||||||||||||
| Localization | Nuclear | Control | Adenocarcinoma of Lung, Normal Lung, Thyroid | |||||||||||||||||||||||||||||||||
| Presentation | TTF-1 is a mouse monoclonal antibody derived from cell culture supernatant that is concentrated, dialyzed, filter sterilized and diluted in buffer pH 7.5, containing BSA and sodium azide as a preservative. | |||||||||||||||||||||||||||||||||||
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| Note: For concentrated antibodies, please centrifuge prior to use to ensure recovery of all product. | ||||||||||||||||||||||||||||||||||||
