Category: L
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Lymph vessel
One of the tubes which carry lymph round the body from the tissues to the veins.
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Lymphuria
The presence of lymph in the urine.
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Lymphotropic
Affecting the lymphatic system. Attracted to lymph cells. For example, human immunodeficiency virus and human T-cell leukemia-lymphoma virus are lymphotropic for CD4+ lymphocytes and Epstein-Barr virus is lymphotropic for B lymphocytes.
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Lymphorrhagia
Escape of lymph from ruptured or severed lymphatic vessels.
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Lymphopoiesis
The production of lymphocytes or lymphoid tissue. Production of lymphocytes, occurring mainly in the bone marrow, lymph nodes, spleen, and thymus. The production of lymphocytes, which occurs in the bone marrow as well as in the lymph nodes, spleen, thymus gland, and gut wall. The precursor cell from which lymphocytes are derived has not yet…
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Lymphoid tissue
Tissue in the lymph nodes, the tonsils and the spleen where masses of lymphocytes are supported by a network of reticular fibres and cells. A tissue responsible for the production of lymphocytes and antibodies. It occurs as discrete organs, in the form of the lymph nodes, tonsils, thymus, and spleen, and also as diffuse groups…
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Lymphography
The making of images of the lymphatic system after having introduced a radio-opaque substance. A diagnostic study in which an isotope (radioactive substance) is injected into the patient’s blood, taken up by the lymphatic system, and visualized through radiographic pictures. The technique of injecting radio-opaque material into the lymphatic system in a particular region of…
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Lymphogranuloma venereum
A sexually transmitted bacterial infection that causes swelling of the genital lymph nodes and, especially in men, a genital ulcer. Infectious disease, caused by the bacterium Chlamydia trachomatis and transmitted by sexual contact. It is characterized by genital lesions and swelling of lymph nodes in the groin area, headache, fever, and malaise. Treatment is by…
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Lymphoedema
A swelling caused by obstruction of the lymph vessels or unusual development of lymph vessels. Swelling of a part or organ due to obstruction of the lymph vessels draining it. Lymphoedema is an unusual buildup of lymph in the tissues, which happens when the regular flow of lymph is obstructed. Lymphedema can stem from various…
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Lymphocele
A cyst containing lymph from injured or diseased lymph nodes or ducts.