| lymphocryptovirus | A genus of the family herpesviridae, subfamily gammaherpesvirinae, consisting of viruses similar to the type species human herpes virus 4 (herpes virus 4, human), better known as the epstein-barr virus. (12 Dec 1998) |
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| lymphocyst | Synonym: lymphocele. Origin: Lympho-+ G. Kystis, bladder (05 Mar 2000) |
| lymphocytapheresis | Separation and removal of lymphocytes from the withdrawn blood, with the remainder of the blood retransfused into the donor. Synonym: lymphapheresis. Origin: Lymphocyte + G. Aphairesis, a withdrawal (05 Mar 2000) |
| lymphocyte | <haematology> White cell of the blood that are derived from stem cells of the lymphoid series. Two main classes are recognised, T and B lymphocytes, the latter responsible (when activated) for production of antibody, the former subdivided into subsets (helper, suppressor, cytotoxic T-cells) and responsible both for cell-mediated immunity and for stimulating B-cells. (18 Nov 1997) |
| lymphocyte activation | <haematology> The change in morphology and behaviour of lymphocytes exposed to a mitogen or to an antigen to which they have been primed. The result is the production of lymphoblasts, cells that are actively engaged in protein synthesis and that divide to form effector populations. Should not be confused with transformation of the type associated with oncogenic viruses and activation is therefore perhaps a better term. (18 Nov 1997) |
| lymphocyte cooperation | T-cell enhancement of the B-cell response to thymic-dependent antigens. (12 Dec 1998) |
| lymphocyte count | A count of the number of lymphocytes in the blood. (12 Dec 1998) |
| lymphocyte depletion | Immunosuppression by reduction of circulating lymphocytes or by T-cell depletion of bone marrow. The former may be accomplished in vivo by thoracic duct drainage or administration of antilymphocyte serum. The latter is performed ex vivo on bone marrow before its transplantation. (12 Dec 1998) |
| lymphocyte function associated antigen | A member of the integrin family that is expressed on all leukocytes and binds to ICAM-1 and ICAM-2 on a variety of cells. (05 Mar 2000) |
| lymphocyte function-associated antigen-1 | A heterodimer molecule widely expressed on cells of haematopoietic origin. Cd11a antigen comprises the alpha chain and the CD18 antigen (antigens, CD18) the beta chain. Lfa-1 is a major receptor of T-cells, B-cells, and granulocytes. It mediates the leukocyte adhesion reactions underlying cytolytic conjugate formation, helper T-cell interactions, and antibody-dependent killing by natural killer cells and granulocytes. Intracellular adhesion molecule-1 (icam-1) has been defined as a ligand for lfa-1. (12 Dec 1998) |
| lymphocyte lymphocyte | A type of non-granular antibodies. (09 Oct 1997) |
| lymphocyte specific protein tyrosine kinase p56(lck) | <enzyme> This enzyme is a lymphoid specific src family tyrosine kinase that is critical for T-cell development and activation. Lck is associated with the cytoplasmic domains of CD4, CD8 and the beta-chain of the il-2 receptor, and is thought to be involved in the earliest steps of tcr-mediated T-cell activation. Registry number: EC 2.7.11.- (12 Dec 1998) |
| lymphocyte subsets | A classification of lymphocytes based on structurally or functionally different populations of cells. (12 Dec 1998) |
| lymphocyte transformation | <haematology> The change in morphology and behaviour of lymphocytes exposed to a mitogen or to an antigen to which they have been primed. The result is the production of lymphoblasts, cells that are actively engaged in protein synthesis and that divide to form effector populations. Should not be confused with transformation of the type associated with oncogenic viruses and activation is therefore perhaps a better term. (18 Nov 1997) |
| lymphocyte transfusion | The transfer of lymphocytes from a donor to a recipient or reinfusion to the donor. (12 Dec 1998) |
Synonyms : Primary Hemophagocytic Lymphohistiocytosis, Familial Hemophagocytic Lymphocytoses, Familial Hemophagocytic Lymphohistiocytoses, Familial Hemophagocytic Lymphohistiocytosis, Hemophagocytic Lymphocytoses, Familial, Hemophagocytic Lymphocytosis, Familial
Synonyms : LEF-1 Transcription Factor, LEF 1 Transcription Factor, Lymphoid Enhancer Binding Factor 1, Transcription Factor, LEF-1
Synonyms : Lymphatic Tissue, Lymphatic Tissues, Lymphoid Tissues, Tissue, Lymphatic, Tissue, Lymphoid, Tissues, Lymphatic, Tissues, Lymphoid
Synonyms : Mediators, Lymphocyte
Synonyms : Germinoblastic Sarcoma, Germinoblastic Sarcomas, Germinoblastomas, Lymphomas, Lymphomas, Malignant, Malignant Lymphoma, Malignant Lymphomas, Reticulolymphosarcomas, Sarcomas, Germinoblastic
| lysogenization |
the process by which a bacterium acquires a phage that becomes integrated into its genome
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| lysogenize |
become integrated into the genome of (a bacterium)
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| lymphokine |
a cytokine secreted by helper T cells in response to stimulation by antigens and that acts on other cells of the immune system (as by activating macrophages)
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| lymphoma |
a neoplasm of lymph tissue that is usually malignant; one of the four major types of cancer
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| lymphopathia venereum |
lymphogranuloma venereum: infectious disease caused by a species of chlamydia bacterium; transmitted by sexual contact; characterized by genital lesions and swelling of lymph nodes in the groin
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| LY | of northern North America |
|---|---|
| LY | of deserts of northern Africa and southern Asia |
| LY | of northern Eurasia |
| LY | of southern Europe |
| LY | small lynx of North America |
| LY | having very keen vision |
| LY | a city in east-central France on the Rhone River |
| LY | evergreen or deciduous shrubs or small trees of United States to Antilles and eastern Asia to the Himalaya |
| LY | deciduous much-branched shrub with dense downy panicles of small bell-shaped white flowers |
| LY | showy evergreen shrub of southeastern United States with shiny leaves and angled branches and clusters of pink to reddish flowers that resemble an umbel |
| LY | deciduous shrub of coastal plain of the eastern United States having nodding pinkish-white flowers |
| LY | a former province of east central France |