| 영문 | myelin sheath | 한글 | 말이집 |
|---|---|---|---|
| 설명 | 신경세포를 이루는 구성조직의 하나이다. 수초는 각 신경을 둘러싸고 있으며, 전기적 전달에 대해 절연체를 형성함으로써, 빠른 신경전달이 이루어지도록 해준다. 또한 각 말이집 사이사이에는 패임 이 형성되어 란비에결절(Ranvier's node) 이 존재하는데 이 결절사이를 신경전달에 있어서 점프식으로 진행되므로 빠른 전달이 가능해진다. |
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| 영문 | Gram stain | 한글 | 그람염색 |
|---|---|---|---|
| 설명 | 미생물을 염색하는 방법 중의 하나. 1884년 덴마크의 의사 H.C.J. 그람(1853~ 1938)이 고안한 특수 염색법이다. 이 염색법을 사용하면 미생물은 양성균과 음성균의 2무리로 크게 나뉜다. 염색법은 균을 유리면에 바르고 가열 고정한다. 젠시안바이오렛, 크리스탈 바이오렛, 메틸바이오렛 등 파라로즈 아닐린계 색소의 어느 하나를 사용하여 우선 염색하고 이어서 루골액을 작용시킨 뒤, 에탄올 또는 아세톤으로 탈색한다. 이때 탈색되지 않고 보라색을 타나내는 것을 그람양성균이라 부르며, 포도알균-폐렴알균-사슬알균 등이 대표적인 예이다. 탈색되면 그람음성균이라 부르며, 대장균-녹농균 등이 있다. 최후에 사프라닌, 푹신 등 적색계의 색소액으로 후염색을 한다. 미생물의 감별에 중요한 염색법이며 염색성의 차이는 영양요구성, 화학요법제(항생물질 등)에 대한 감수성의 차이와도 관련되는 점이 많으므로 사용약제의 선택시에도 중요한 역할을 한다. 그람양성균과 음성균의 차이는 세균벽의 구조에 있는데, 양성균은 세포막의 바깥쪽 펩티드글리칸이라는 당단백질층의 두께가 20~80nm나 되고, 그램음성균의 펩티드글리칸 층은 2~3nm로 얇고, 다시 바깥쪽에 외막이라 부르는 층이 있다. |
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| AFB Stain | Acid Fast Bacilli Stain |
|---|---|
| HE stain | Hematoxylin-Eosin stain |
| WS | Waardenburg syndrome; ward secretary; Warkany syndrome; Warthin-Starry [stain]; water soluble; water... |
| CS | calf serum; campomelic syndrome; carcinoid syndrome; cardiogenic shock; caries-susceptible; carotid ... |
| PAL | pathology laboratory; peptidyl-alpha-hydroxyglycine alpha-amidating lysine phase alteration plane; p... |
| PWS | Port Wine Stain |
|---|---|
| DMF | Dose modification factors |
| ICD9CM | International Classification of Diseases 9th Revision Clinical Modification |
| ICD-9 CM | International Classification of Diseases, Ninth Revision, Clinical Modification |
| MDRD | Modification of Diet in Renal Disease |
| myelin sheath | <anatomy, neurology> An insulating layer surrounding vertebrate peripheral neurons, that dramatically increases the speed of conduction. It is formed by specialised Schwann cells, that can wrap around neurons up to 50 times. The exposed areas are called nodes of Ranvier: they contain very high densities of sodium channels and action potentials jump from one node to the next, without involving the intermediate axon, a process known as saltatory conduction. (18 Nov 1997) |
|---|---|
| Weigert-Gram stain | <technique> A stain for bacteria in tissues in which sections are stained in alum-haematoxylin, then in eosin, aniline methyl violet, and Lugol's solution. (05 Mar 2000) |
| Weigert's iron haematoxylin stain | <technique> A nuclear staining solution containing haematoxylin, ferric chloride, and hydrochloric acid; useful in combination with von Gieson's stain, especially for demonstrating connective tissue elements or Entamoeba histolytica in sections. (05 Mar 2000) |
| Weigert's stain | <technique> 1. For actinomyces, a staining method using immersion in a dark red orsellin solution in alcohol, then staining in crystal-violet solution. See: iron haematoxylin. 2. For elastin, a staining solution of fuchsin, resorcin, and ferric chloride; elastic fibres stain blue-black. 3. For fibrin, a staining method using solutions of aniline-crystal violet and iodine-potassium iodide, then decolorizing in aniline oil and xylol; the fibrin is stained dark blue. 4. For myelin, a staining method using ferric chloride and haematoxylin; myelin stains deep blue, degenerated portions a light yellowish colour. 5. For neuroglia, a complicated process in which the final treatment is like that for staining fibrin; neuroglia and nuclei stain blue. 6. For reticulum, a silver impregnation technique in which reticulum appears as black, well-defined fibres without beading and with a relatively clear background. (05 Mar 2000) |
| Stirling's modification of Gram's stain | <technique> A stable aniline-crystal violet stain. (05 Mar 2000) |
| Weigert, Carl | <person> German pathologist, 1845-1904. See: Weigert's law, Weigert's iodine solution. See entries under stain. (05 Mar 2000) |
| weigert-meyer rule | <radiology> Applies to duplex collecting systems, upper-pole ureter, obstruction most likely to be hydronephrosis, inserts more inferiorly and medially in bladder, may insert into urethra, vagina, etc., males not incontinent: insertion above ext. Sphincter, associated with ureterocele, lower-pole ureter, reflux most likely to be pyelonephritis see also: drooping lily sign (12 Dec 1998) |
| Weigert's iodine solution | An iodine-potassium iodide mixture used as a reagent to alter crystal and methyl violet so that they are retained by certain bacteria and fungi. (05 Mar 2000) |
| Weigert's law | The loss or destruction of a part or element in the organic world is likely to result in compensatory replacement and overproduction of tissue during the process of regeneration or repair (or both), as in the formation of callus when a fractured bone heals. Synonym: overproduction theory. (05 Mar 2000) |
| modification | 1. A nonhereditary change in an organism; e.g., one that is acquired from its own activity or environment. 2. A chemical or structural alteration in a molecule. Behaviour modification, the systematic use of principles of conditioning and learning, especially operant or instrumental conditioning, to teach certain skills or to extinguish undesirable behaviours, attitudes, or phobias. Chemical modification, alteration in the structure of a molecule, typically a macromolecule such as a protein, by chemical means; often, the covalent addition by some reagent. Covalent modification, alteration in the structure of a macromolecule by enzymatic means, resulting in a change in the properties of that macromolecule; frequently, this type of modification is physiologically relevant. (05 Mar 2000) |
| modification enzyme | <enzyme, molecular biology> An enzyme that introduces minor bases into DNA or RNA or that alters bases already incorporated. Serves to alter the sequence so that restriction enzymes will not damage the strand. (18 Nov 1997) |
| post-translational modification | The enzymatic processing of a polypeptide chain after translation from messenger RNA and after peptide bond formation has occurred. Examples include glycosylation, acylation, limited proteolysis, phosphorylation, isoprenylation. (10 Oct 1997) |
| ScrFI modification methylase | <enzyme> From lactococcus lactis subsp. Cremoris uc503; recognises sequence ccngg and forms m(5)ccngg; see also DNA modification methylase dsav and DNA modification methylase ssoii Registry number: EC 2.1.1.- Synonym: scrfi methylase (26 Jun 1999) |
| host restriction-modification | A bacterial system where the bacterium is able to destroy invading DNA from a bacteriophage (virus which infects bacteria) while at the same time preventing the destruction of their own DNA. The phage DNA is cleaved by a restriction enzyme made by the bacterium, the bacterial DNA is modified (usually with methylation) so that the enzyme will not destroy it. (09 Oct 1997) |
| DNA modification | <molecular biology> A variety of chemical changes made to a DNA molecule just after it has been replicated. An example is DNA methylation. (09 Oct 1997) |
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|