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Megacolon, Toxic
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D008532 |
[An acute form of MEGACOLON, severe pathological dilatation of the COLON. It is associated with clinical conditions such as ULCERATIVE COLITIS; CROHN DISEASE; AMEBIC DYSENTERY; or CLOSTRIDIUM ENTEROCOLITIS.
] |
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Megakaryocyte Progenitor Cells
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D055016 |
[The parent cells that give rise to cells in the MEGAKARYOCYTE lineage, and ultimately BLOOD PLATELETS.
] |
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Megakaryocyte-Erythroid Progenitor Cells
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D055015 |
[The parent cells that give rise to both cells of the MEGAKARYOCYTE and the ERYTHROCYTE lineages.
] |
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Megakaryocytes
|
D008533 |
[Very large BONE MARROW CELLS which release mature BLOOD PLATELETS.
] |
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Megalencephaly
|
D058627 |
[A congenital abnormality in which the occipitofrontal circumference is greater than two standard deviations above the mean for a given age. It is associated with HYDROCEPHALUS; SUBDURAL EFFUSION; ARACHNOID CYSTS; or is part of a genetic condition (e.g., ALEXANDER DISEASE; SOTOS SYNDROME).
] |
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Megaloblasts
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D008534 |
[Red blood cell precursors, corresponding to ERYTHROBLASTS, that are larger than normal, usually resulting from a FOLIC ACID DEFICIENCY or VITAMIN B 12 DEFICIENCY.
] |
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Megasphaera
|
D045851 |
[A genus of gram-negative bacteria in the family ACIDAMINOCOCCACEAE, found in the RUMEN of SHEEP and CATTLE, and also in humans.
] |
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Megasphaera elsdenii
|
D000070101 |
[A species of Megasphaera that occurs primarily in the RUMEN and is able to metabolize LACTIC ACID.
] |
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Megestrol
|
D008535 |
[A progestational hormone used most commonly as the acetate ester. As the acetate, it is more potent than progesterone both as a progestagen and as an ovulation inhibitor. It has also been used in the palliative treatment of breast cancer.
] |
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Megestrol Acetate
|
D019290 |
[Megestrol acetate is a progestogen with actions and uses similar to those of the progestogens in general. It also has anti-androgenic properties. It is given by mouth in the palliative treatment or as an adjunct to other therapy in endometrial carcinoma and in breast cancer. Megestrol acetate has been approved to treat anorexia and cachexia. (From Reynolds JEF(Ed): Martindale: The Extra Pharmacopoeia (electronic version). Micromedex, Inc, Englewood, CO, 1995)
] |
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Meglumine
|
D008536 |
[1-Deoxy-1-(methylamino)-D-glucitol. A derivative of sorbitol in which the hydroxyl group in position 1 is replaced by a methylamino group. Often used in conjunction with iodinated organic compounds as contrast medium.
] |
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Meglumine Antimoniate
|
D000077485 |
[ANTIMONY salt of meglumine that is used in the treatment of LEISHMANIASIS.
] |
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Meglutol
|
D015093 |
[An antilipemic agent which lowers cholesterol, triglycerides, serum beta-lipoproteins and phospholipids. It acts by interfering with the enzymatic steps involved in the conversion of acetate to hydroxymethylglutaryl coenzyme A as well as inhibiting the activity of HYDROXYMETHYLGLUTARYL COA REDUCTASES which is the rate limiting enzyme in the biosynthesis of cholesterol.
] |
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Meibomian Gland Dysfunction
|
D000080343 |
[A chronic dysfunction of MEIBOMIAN GLANDS characterized by altered tear film stability and function due to a decrease or alteration in lipid quality/content in meibum. It is often associated with evaporative-type DRY EYE SYNDROME.
] |
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Meibomian Glands
|
D008537 |
[The sebaceous glands situated on the inner surface of the eyelids between the tarsal plates and CONJUNCTIVA.
] |
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Meige Syndrome
|
D008538 |
[A syndrome characterized by orofacial DYSTONIA; including BLEPHAROSPASM; forceful jaw opening; lip retraction; platysma muscle spasm; and tongue protrusion. It primarily affects older adults, with an incidence peak in the seventh decade of life. (From Adams et al., Principles of Neurology, 6th ed, p108)
] |
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Meigs Syndrome
|
D008539 |
[The triad of benign FIBROMA or other ovarian tumors with ASCITES, and HYDROTHORAX due to large PLEURAL EFFUSIONS.
] |
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Meiosis
|
D008540 |
[A type of CELL NUCLEUS division, occurring during maturation of the GERM CELLS. Two successive cell nucleus divisions following a single chromosome duplication (S PHASE) result in daughter cells with half the number of CHROMOSOMES as the parent cells.
] |
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Meiotic Prophase I
|
D049469 |
[The stage during meiotic prophase I, following LEPTOTENE STAGE, during which SYNAPSIS occurs between homologous CHROMOSOMES via the SYNAPTONEMAL COMPLEX.
, The stage during the first meiotic prophase, following PACHYTENE STAGE, when the SYNAPTONEMAL COMPLEX dissolves and the homologous CHROMOSOMES begin to separate.
, The stage of meiotic prophase I following DIPLONEMA when the homologous CHROMOSOMES complete CROSSING OVER and separation, and become fully condensed.
, The first stage of meiotic prophase I when the CHROMOSOMES first become visible. Also called leptonema. Distinguish from the genus Leptonema.
, The prophase of the first division of MEIOSIS (in which homologous CHROMOSOME SEGREGATION occurs). It is divided into five stages: leptonema, zygonema, PACHYNEMA, diplonema, and diakinesis.
] |
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Mekong Valley
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D008541 |
[The geographic area of the Mekong Valley in general or when the specific country or countries are not indicated.
] |
