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carcinoembryonic antigen |
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carcinoembryonic antigen [¦kärs·ən·ō‚em·brē¦än·ik ′ant·i·jən] (immunology) A glycoprotein found in tissues of the fetal gut during the first two trimesters of pregnancy and in the peripheral blood of individuals with some forms of cancer, such as digestive-system or breast cancer. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Immunohistochemical staining can be an important diagnostic aid in these cases; columnar cell variants of PTC should be negative for carcinoembryonic antigen and positive for thyroglobulin unless the cells are too poorly differentiated. Results of testing for tumor-associated antigens, such as carcinoembryonic antigen, carcinoma antigen 19-9, prostatic specific antigen, and alpha fetoprotein, were negative. 16) They found a statistically significant infrequency of gross cystic disease fluid protein-15 in eccrine sweat gland carcinomas, a paucity of carcinoembryonic antigen in breast cancers, and an absence of estrogen receptor protein in salivary duct carcinomas. |
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