| myelogenic sarcoma | <tumour> Sarcoma originating in the bone marrow. (05 Mar 2000) |
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| myelogenous | Referring to myelocytes, a type of white blood cell. Also called myeloid. (12 Dec 1998) |
| myelogone | Myelogonium An immature white blood cell of the myeloid series that is characterised by a relatively large, fairly deeply stained, finely reticulated nucleus that contains palely stained nucleoli, and a scant amount of rimlike, nongranular, moderately basophilic cytoplasm. Myelogones are difficult to distinguish from lymphoblasts and monoblasts, unless one evaluates them in relation to the more mature forms usually associated with the younger cells. Origin: myelo-+ G. Gone, seed (05 Mar 2000) |
| myelogram | <investigation> A diagnostic procedure where a radiopaque contrast dye is injected into the spinal canal. X-rays are then performed which reveal the anatomy of the spinal canal. Myelograms can be used to diagnosis disk disease, spinal stenosis and tumours of the spinal canal. MRI and CT scanning have largely displaced the use of this more invasive test. (27 Sep 1997) |
| myelography | <radiology> Contrast material, iohexol: 15 cc of 180, 10 ml of 240, pattern: intramedullary, cord widened (on 2 views!!), intradural - extramedullary, meniscus sign, extradural, featureless sac (12 Dec 1998) |
| myeloic | Pertaining to the tissue and precursor cells from which neutrophils, eosinophils, and basophils are derived. (05 Mar 2000) |
| myeloid | Collective term for the nonlymphocyte groups of white blood cells. It includes cells from the granulocyte, monocyte and platelet lineages. (13 Nov 1997) |
| myeloid cell | <haematology, pathology> One of the two classes of marrow derived blood cells, includes megakaryocytes, erythrocyte precursors, mononuclear phagocytes and all the polymorphonuclear granulocytes. That all these are ultimately derived from one stem cell lineage is shown by the occurrence of the Philadelphia chromosome in these, but not lymphoid, cells. most authors tend, however, to restrict the term myeloid to mononuclear phagocytes and granulocytes and commonly distinguish a separate erythroid lineage. (12 May 1997) |
| myeloid metaplasia | A progressive disease of the bone marrow where neoplastic bone marrow stem cells lodge and grow in multiple sites outside the bone marrow. Typically, there is enlargement of the spleen and a gradual replacement of the bone marrow elements by fibrosis (scarring), progressive anaemia and variable changes in the number of white blood cells and platelets. Diagnosis is by bone marrow biopsy. There is no definitive treatment for this disorder that has been shown to affect life span favorably. Origin: Gr. Plassein = to form (27 Sep 1997) |
| myeloid sarcoma | <tumour> A malignant tumour of immature myeloid cells, frequently subperiosteal, associated with or preceding granulocytic leukaemia. See: chloroma. Synonym: myeloid sarcoma. (05 Mar 2000) |
| myeloid series | The granulocytic and the erythrocytic series. (05 Mar 2000) |
| myeloid tissue | Bone marrow consisting of the developmental and adult stages of erythrocytes, granulocytes, and megakaryocytes in a stroma of reticular cells and fibres, with sinusoidal vascular channels. (05 Mar 2000) |
| myeloidin | <physiology> A substance, present in the protoplasm of the retinal epithelium cells, and resembling, if not identical with, the substance (myelin) forming the medullary sheaths of nerve fibres. Origin: Myelin + -in. Source: Websters Dictionary (01 Mar 1998) |
| myeloidosis | General hyperplasia of myeloid tissue. (05 Mar 2000) |
| myeloleukaemia | A form of leukaemia in which the abnormal cells are derived from myelopoietic tissue. (05 Mar 2000) |
| myelin |
In neuroscience, myelin is an electrically insulating fatty layer that surrounds the axons of many neurons, especially those in the peripheral nervous system. It is an outgrowth of glial cells: Schwann cells supply the myelin for peripheral neurons while oligodendrocytes supply it to those of the Central nervous system. The myelin produced by the different cell types varies in its chemical composition or configuration, but performs the same function. ...
출처: en.wikipedia.org/wiki/Myelin
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| myelin sheath |
In neuroscience, myelin is an electrically insulating fatty layer that surrounds the axons of many neurons, especially those in the peripheral nervous system. It is an outgrowth of glial cells: Schwann cells supply the myelin for peripheral neurons while oligodendrocytes supply it to those of the Central nervous system. The myelin produced by the different cell types varies in its chemical composition or configuration, but performs the same function. ...
출처: en.wikipedia.org/wiki/Myelin_sheath
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| myelinopathy |
Myelinopathy is due to primary destruction of myelin or the myelinating Schwann cells, which leaves the axon intact, but causes an acute failure of impulse conduction.This demyelination slows down or completely blocks the conduction of electical impulses through the nerve. ...
출처: en.wikipedia.org/wiki/Myelinopathy
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| myeloablation |
A severe form of myelosuppression. Myelosuppression is a condition in which bone marrow activity is decreased, resulting in fewer red blood cells, white blood cells, and platelets. It is a side effect of some cancer treatments.
출처: www.stjude.org/glossary
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| myelin |
The fatty substance that covers and protects nerves.
출처: www.stjude.org/glossary
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