| SP | sacroposterior; sacrum to pubis; salivary progesterone; schizotypal personality; semi-private [room]... |
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| dpdt | double-pole double-throw [switch] |
| dpst | double-pole single-throw [switch] |
| SCS | Saethre-Chotzen syndrome; shared computer system; silicon-controlled switch; Society of Clinical Sur... |
| IAC | image analysis cytometry; ineffective airway clearance; internal auditory canal; interposed abdomina... |
| ASO | Arterial switch operation |
|---|---|
| CSR | class switch recombination |
| S | switch |
| IAP | Intracarotid Amobarbital Procedure |
| LEEP | Loop Electrosurgical Excision Procedure |
| arterial switch operation | Operation for complete transposition of the great arteries; the most common way to repair this defect consists of switching the aorta and pulmonary arteries and implanting the coronary arteries into the neoaorta (the original pulmonary artery). (05 Mar 2000) |
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| genes, switch | Genes that cause the epigenotype (i.e., the interrelated developmental pathways through which the adult organism is realised) to switch to an alternate cell lineage-related pathway. Switch complexes control the expression of normal functional development as well as oncogenic transformation. (12 Dec 1998) |
| gene switch | <molecular biology> A situation in which a cell or organism stops expressing one gene orgene group and switches to expressing a different gene or group of genes. (09 Oct 1997) |
| class switch | Change in the isotype of antibody produced after a B-cell has encountered an antigen. (05 Mar 2000) |
| switch | 1. To strike with a switch or small flexible rod; to whip. 2. To swing or whisk; as, to switch a cane. 3. To trim, as, a hedge. 4. To turn from one railway track to another; to transfer by a switch; generally with off, from, etc.; as, to switch off a train; to switch a car from one track to another. 5. To shift to another circuit. Origin: Switched; Switching. 1. A small, flexible twig or rod. "Mauritania, on the fifth medal, leads a horse with something like a thread; in her other hand she holds a switch." (Addison) 2. A movable part of a rail; or of opposite rails, for transferring cars from one track to another. 3. A separate mass or trees of hair, or of some substance (at jute) made to resemble hair, worn on the head by women. 4. A mechanical device for shifting an electric current to another circuit. Safety switch, an arrangement of tracks whereby elevations otherwise insurmountable are passed. The track ascends by a series of zigzags, the engine running alternately forward and back, until the summit is reached. <physics> Switch board, a collection of switches in one piece of apparatus, so arranged that a number of circuits may be connected or combined in any desired manner. Switch grass. <botany> See Grass. Origin: Cf. OD. Swick a scourage, a whip. Cf. Swink, Swing. Source: Websters Dictionary (01 Mar 1998) |
| switch region | <molecular biology> The nucleotide sequences in heavy chain immunoglobulin genes located in the introns at the 5' end of each CH locus concerned with DNA recombination events that lead to changes in the type of heavy chain produced by a B-cell, for example IgM to IgG switching. These regions are highly conserved sequences. See: isotype switching. (19 Jan 1998) |
| immunoglobulin switch region | Site on a segment of a B-cell immunoglobulin heavy-chain gene where recombination or rearrangement can occur, expressed as isotype or allotype switching, maturation of immune response, or recombination of DNA molecules. It is found on genes encoding all five immunoglobulin heavy chains. (12 Dec 1998) |
| q-switch | <radiobiology> Optical switch used to rapidly change the Q of an optical resonator, utilised in the optical resonator of a laser to prevent lasing action until a high level of gain and energy storage are achieved in the laser medium. When the switch is triggered and rapidly increases the Q of the cavity, a stronger laser pulse is generated. See: oscillator. (09 Oct 1997) |
| Belsey Mark IV procedure | A transthoracic hiatal hernia repair that restores the lower oesophageal sphincter zone to the high pressure region below the diaphragm. (05 Mar 2000) |
| Belsey Mark V procedure | A modified Belsey Mark IV procedure often employing pledgetted sutures performed for patients with hiatal hernia plus disordered oesophageal motility in whom an oesophageal myotomy is also needed. (05 Mar 2000) |
| Girdlestone procedure | Complete resection or excision of the head and neck of the femur. (05 Mar 2000) |
| Vineberg procedure | Implantation of the internal mammary artery into the myocardium to improve blood flow to the heart. (05 Mar 2000) |
| V-Y procedure | A flap in which the incision is made in a V shape and sutured in a Y shape to gain additional tissue. Synonym: V-Y plasty, V-Y procedure. (05 Mar 2000) |
| Gomori procedure | <procedure> Cytochemical staining procedure used to localise acid phosphatases. Depends upon the production of phosphate ions from organic phospho esters such as _ glycerophosphate. The phosphate in the presence of lead ions causes the formation of a precipitate of lead salt that is converted to the brown sulphide of lead by the action of yellow ammonium sulphide. (18 Nov 1997) |
| Chamberlain procedure | A limited left anterior thoracostomy for biopsy of the mediastinal nodes out of reach by cervical mediastinoscopy. Synonym: anterior mediastinotomy. (05 Mar 2000) |
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