| lympholeukocyte | <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) |
|---|---|
| lymphology | Synonym: lymphangiology. Origin: Lympho-+ G. Logos, study (05 Mar 2000) |
| lymphoma | <oncology, tumour> Malignant tumour of lymphoblasts derived from B lymphocytes. most commonly affects children in tropical Africa: both Epstein Barr virus and immunosuppression due to malarial infection are involved. (18 Nov 1997) |
| lymphoma, aids-related | B-cell lymphoid tumours that occur in association with aids. Patients often present with an advanced stage of disease and highly malignant subtypes including burkitt lymphoma, immunoblastic large-cell lymphoma, small non-cleaved-cell lymphoma and diffuse large-cell lymphoma. The tumours are often disseminated in unusual extranodal sites and chromosomal abnormalities are frequently present. It is likely that polyclonal B-cell lymphoproliferation in aids is a complex result of ebv infection, HIV antigenic stimulation, and T-cell-dependent HIV activation. (12 Dec 1998) |
| lymphoma, B-cell | A group of heterogeneous lymphoid tumours generally expressing one or more B-cell antigens or representing malignant transformations of B-lymphocytes. (12 Dec 1998) |
| lymphoma, diffuse | Malignant lymphoma in which neoplastic cells diffusely infiltrate the entire lymph node without any definite organised pattern. Patients whose lymphomas present a diffuse pattern generally have a more unfavorable survival outlook than those presenting with a follicular or nodular pattern. (12 Dec 1998) |
| lymphoma, follicular | Malignant lymphoma in which the lymphomatous cells are clustered into identifiable nodules within the lymph nodes. The nodules resemble to some extent the germinal centres of lymph node follicles and most likely represent neoplastic proliferation of lymph node-derived follicular centre B-lymphocytes. This class of lymphoma usually occurs in older persons, is commonly multinodal, and possibly extranodal. Patients whose lymphomas present a follicular or nodular pattern generally have a more indolent course than those presenting with a diffuse pattern. (12 Dec 1998) |
| lymphoma, high-grade | One of the three major prognostic groupings for non-hodgkin lymphomas as proposed in the working formulation of the non-hodgkin's lymphoma pathologic classification project sponsored by the national cancer institute (1981). Lymphomas falling within this group have a relatively unfavorable survival potential. (12 Dec 1998) |
| lymphoma, intermediate-grade | One of the three major prognostic groupings for non-hodgkin lymphomas as proposed in the working formulation of the non-hodgkin's lymphoma pathologic classification project sponsored by the national cancer institute (1981). Lymphomas falling within this group have an intermediate survival potential. (12 Dec 1998) |
| lymphoma, large-cell | A form of malignant lymphoma in which the malignant cells resemble histiocytes morphologically but are presently considered to be derived from lymphoid elements. These cells are irregular in shape with relatively abundant, frequently acidophilic cytoplasm. Large-cell lymphoma can occur in both nodular (follicular) and diffuse forms, with the latter being more frequently seen. (12 Dec 1998) |
| lymphoma, large-cell, diffuse | Malignant lymphoma composed of large cells which may be both cleaved and noncleaved. The pattern is predominantly diffuse. most of these lymphomas represent the malignant counterpart of B-lymphocytes at midstage in the process of differentiation. (12 Dec 1998) |
| lymphoma, large-cell, follicular | Malignant lymphoma in which the majority of neoplastic cells within the follicles are large cleaved or noncleaved cells. The degree to which the follicular centre cells retain their ability to form follicles varies with the state of B-cell transformation. (12 Dec 1998) |
| lymphoma, large-cell, immunoblastic | Malignant lymphoma characterised by the presence of immunoblasts with uniformly round-to-oval nuclei, one or more prominent nucleoli, and abundant cytoplasm. This class may be subdivided into plasmacytoid and clear-cell types based on cytoplasmic characteristics. A third category, pleomorphous, may be analogous to some of the peripheral T-cell lymphomas (lymphoma, T-cell, peripheral) recorded in both the united states and japan. (12 Dec 1998) |
| lymphoma, large-cell, ki-1 | A large-cell, non-hodgkin's, malignant lymphoma with pleomorphic appearance and reactivity with the monoclonal antibody ki-1. The lymphoma is most often found in the skin and lymph nodes and expresses the ki-1 (CD30) antigen (antigens, CD30) on its surface. It is often mistaken for metastatic carcinoma and malignant histiocytosis. (12 Dec 1998) |
| lymphoma, low-grade | One of the three major prognostic groupings for non-hodgkin lymphomas as proposed in the working formulation of the non-hodgkin's lymphoma pathologic classification project sponsored by the national cancer institute (1981). Lymphomas falling within this group have a relatively favourable survival potential. (12 Dec 1998) |
Synonyms : Lymphocytic Lymphoma, Nodular, Poorly Differentiated, Lymphoma, Lymphocytic, Nodular, Poorly Differentiated, Lymphoma, Small Cleaved Cell, Follicular, Small Cleaved-Cell Lymphoma, Follicular, Small Follicular Center-Cell Lymphoma
Synonyms : Diffuse Well-Differentiated Lymphocytic Lymphoma, Lymphocytic Lymphoma, Diffuse, Well Differentiated, Lymphocytic Lymphoma, Well Differentiated, Lymphoma, Lymphocytic, Diffuse, Well Differentiated, Lymphoma, Lymphocytic, Well Differentiated
Synonyms : Diffuse Undifferentiated Lymphoma, Lymphoma, Small Non-Cleaved-Cell, Small Non-Cleaved-Cell Lymphoma, Small Noncleaved-Cell Lymphoma, Diffuse Undifferentiated Lymphomas, Lymphoma, Diffuse Undifferentiated, Lymphoma, Small Non Cleaved Cell
Synonyms : Small-Cell Lymphoma, Lymphocytic Lymphomas, Lymphoma, Small Cell, Lymphomas, Lymphocytic, Lymphomas, Small-Cell, Small Cell Lymphoma, Small-Cell Lymphomas
Synonyms : Lymphoma, T Cell, Lymphomas, T-Cell, T Cell Lymphoma, T-Cell Lymphomas
| lymphocytic choriomeningitis virus |
a virus of the genus the LCMV-LASV complex that is the etiologic agent of lymphocytic choriomeningitis. Called also LCM v.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
|
|---|---|
| lysergic acid diethylamide |
D-Lysergic Acid Diethylamide, commonly called acid, LSD, or LSD-25, is a powerful semisynthetic psychedelic drug. A typical dose of LSD is only 100 micrograms, a tiny amount roughly equal to one-tenth the weight of a grain of sand. LSD causes a powerful intensification and alteration of senses, feelings, memories, and self-awareness for 6 to 12 hours. In addition, LSD usually produces visual effects such as moving geometric patterns, "trails" behind moving objects, and brilliant colors. ...
출처: en.wikipedia.org/wiki/Lysergic_acid_diethylamide
|
| lymph |
In mammals including humans, the lymphatic vessels (or lymphatics) are a network of thin tubes that branch, like blood vessels, into tissues throughout the body. Lymphatic vessels carry lymph, a colorless, watery fluid originating from interstitial fluid (fluid in the tissues). The lymphatic system transports infection-fighting cells called lymphocytes, is involved in the removal of foreign matter and cell debris by phagocytes and is part of the body's immune system. ...
출처: en.wikipedia.org/wiki/Lymph
|
| lysosome |
Lysosomes are organelles in animal cells that contain digestive enzymes (acid hydrolases) to digest macromolecules. They are built in the Golgi apparatus. At pH 4.8, the interior of the lysosomes is more acidic than the cytosol (pH 7). The lysosome single membrane stabilizes the low pH by pumping in protons (H+) from the cytosol, and also protects the cytosol, and therefore the rest of the cell, from the degradative enzymes within the lysosome. ...
출처: en.wikipedia.org/wiki/Lysosome
|
| lyssophobia |
The English suffix -phobia is technically used to describe irrational, disabling fear as a mental disorder, and commonly misused to describe hatred of a particular thing or subject. Everyday language has misused the use of this suffix as a mild or irrational fear with no serious substance; however, its origin is from areas of psychiatry which study serious phobias which disable a person's life. ...
출처: en.wikipedia.org/wiki/Lyssophobia
|
| LY | a variety of the loosestrife herb |
|---|---|
| LY | trailing European evergreen with yellow flowers |
| LY | a loosestrife vine |
| LY | common North American yellow-flowered plant |
| LY | North American plant with spikes of yellow flowers, found in wet places |
| LY | frequently considered a weed |
| LY | Macedonian general under Alexander the Great |
| LY | any substance (such as an antibody) or agent that can cause lysis |
| LY | an essential amino acid found in proteins |
| LY | a disorder in which a lack of certain enzymes makes it impossible to digest the amino acid lysine |
| LY | an inborn error of metabolism in which the lack of certain enzymes leads to an inability to metabolize the amino acid lysine |
| LY | Greek sculptor (4th century BC) |