| West's syndrome | <syndrome> An encephalopathy in infancy characterised by infantile spasms, arrest of psychomotor development, and hypsarrhythmia. (05 Mar 2000) |
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| West, Charles | <person> English physician, 1816-1898. See: West's syndrome. (05 Mar 2000) |
| Westberg's space | The space surrounding the origin of the aorta which is invested with the pericardium. (05 Mar 2000) |
| Westberg, Friedrich | <person> 19th century German physician. See: Westberg's space. (05 Mar 2000) |
| Westergren method | A procedure for estimating the sedimentation rate of red blood cells in fluid blood by mixing venous blood with an aqueous solution of sodium citrate and allowing it to stand in an upright standard pipet (200 mm long) filled to the zero mark; the fall of the red blood cells, in millimeters, is then observed in 1 hr; the normal rate for men is 0 to 15 mm (average, 4 mm), and for women 0 to 20 mm (average, 5 mm). (05 Mar 2000) |
| Westergren, Alf | <person> Swedish physician, *1891. See: Westergren method. (05 Mar 2000) |
| westermark sign | <radiology> Seen in 2% of pulmonary embolism, focal oligaemia (vasoconstriction) distal to embolus (12 Dec 1998) |
| Westermark's sign | In chest radiography, an abrupt tapering of a vessel caused by pulmonary thromboembolic obstruction. (05 Mar 2000) |
| western | 1. Of or pertaining to the west; situated in the west, or in the region nearly in the direction of west; being in that quarter where the sun sets; as, the western shore of France; the western ocean. "Far o'er the glowing western main." (Keble) 2. Moving toward the west; as, a ship makes a western course; coming from the west; as, a western breeze. Western Church. See Latin Church, under Latin. Western empire, the western portion of the Roman empire, as divided, by the will of Theodosius the Great, between his sons Honorius and Arcadius, a. D. 395. Source: Websters Dictionary (01 Mar 1998) |
| western Australia | A state in western Australia. Its capital is perth. It was first visited by the dutch in 1616 but the english took possession in 1791 and permanent colonization began in 1829. It was a penal settlement 1850-1888, became part of the colonial government in 1886, and was granted self government in 1890. (12 Dec 1998) |
| western blot | <technique> A technique similar to Southern blotting, though it is used for proteins. (09 Oct 1997) |
| Western blot analysis | A procedure in which proteins separated by electrophoresis in polyacrylamide gels are transferred (blotted) onto nitrocellulose or nylon membranes and identified by specific complexing with antibodies that are either pre-or post-tagged with a labelled secondary protein. See: immunoblot. Synonym: Western blot, Western blotting. Origin: coined to distinguish it from eponymic Southern blot a. (05 Mar 2000) |
| Western blotting | <molecular biology> An electroblotting method in which proteins are transferred from a gel to a thin, rigid support (nitrocellulose) and detected by binding of labelled antibody. See: blots. (18 Nov 1997) |
| western equine encephalomyelitis | An equine encephalomyelitis found in the western U.S. And parts of South America, transmitted by mosquitoes and caused by the western equine encephalomyelitis virus (a species of Alphavirus in the family Togaviridae); the infection is similar to but milder than eastern equine encephalomyelitis in man and is, as a rule, inapparent, but some cases with central nervous system involvement have been fatal. (05 Mar 2000) |
| western equine encephalomyelitis virus | A group A arbovirus of the genus Alphavirus, family Togaviridae, occurring in the western United States and parts of South America; it occurs naturally, usually as a symptomless infection in birds, but causes western equine encephalomyelitis in horses and humans following transfer by the bites of mosquitoes, chiefly Culex tarsalis. Synonym: WEE virus. (05 Mar 2000) |