Tag: Antigen
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PSA (prostate specific antigen)
Indications: The dosage of the circulating antigen secreted by prostate glandular cells can detect a cancer, to assess the stage to follow the change. Found in any other tissue, its rate is in any prostatic disease: whether adenoma, cancer, or prostate. Principle: Prostatic specific antigen is a glycoprotein secreted by the prostate. Technique: Sampling 5…
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Carcinoembryonic Antigen (CEA)
Indications: CEA (carcinoembryonic antigen) has an identity with an antigen of the mucous colic embryo, from which it takes its name, and is associated with colorectal cancer. This is less of a diagnostic aid as therapeutic monitoring of colorectal cancers. Principle: Secreted by the digestive mucosa cells, the antigen is normally present, but at very…
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CA 125 Antigen
Indications: This is not a diagnostic test, the purpose to review the monitoring of epithelial ovarian cancer. Principle: A monoclonal antibody allows to highlight an antigen not normally present in the blood released in the genital epithelial tissue is in the serum by tumor cells. Technique: Sampling 5 mL of blood in a dry tube.…
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Antigen CA 19.9
Indications: CA 19.9 is a circulating antigen associated with gastrointestinal cancer, especially the pancreas and colon. Principle: This is detected in the serum antigen not normally present and produced by gastrointestinal tumor cells. Technique: Sampling 5 mL of blood in a dry tube. The assay is radioimmunoassay or enzyme immunoassay with double antibodies. Results: normal…
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Antigen CA 15.3
Indications: The blood test CA 15.3 is useful in the effective control of an antitumor treatment. Principle: Circulating antigen, CA 15-3 is associated with breast cancer: it is recognized by monoclonal antibodies against membrane antigens of breast tumors. Technique: Levy of 2 mL of blood in a dry tube. The assay method is radioimmunoassay or…
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Cells involved in the immune response
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A- Introduction: Most immune cells are hematopoietic d`origine. Hematopoiesis occurs in the bone marrow. Hematopoiesis is characterized by sequential stages of differentiation defined by phenotypic expression of modification with membrane molecule and particular functional property has certain stage of maturation, proliferation and differentiation of each Lingée is control by extracellular signals in the form of…
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