| SNAREs | Receptors for SNAPs. The neuronal receptor for vesicle SNAPs, v SNARE, is synaptobrevin, also called VAMP 2. The target (t SNARE) associated with the plasma membrane of the axonal terminal is syntaxin. The SNAP SNARE complex is apparently responsible for regulating vesicle targeting: neurotoxins such as tetanus toxin and botulinum toxin selectively cleave SNAREs or SNAPs. See: cellubrevin. (18 Nov 1997) |
|---|---|
| SNE | <abbreviation> Subacute necrotizing encephalomyelopathy. (05 Mar 2000) |
| Sneddon | I.B., 20th century English dermatologist. See: Sneddon's syndrome, Sneddon-Wilkinson disease. (05 Mar 2000) |
| sneddon syndrome | <syndrome> A syndrome of livedo reticularis and cerebrovascular lesions involving all the extremities and the trunk, worsening in cold weather and during the acute phase of neurological complications. Chronic ischemia of the extremities is present in all cases. Adventitial fibrosis, thrombosis, and changes in the media are the principal pathological changes in the digital arteries. Neurological manifestations consist of stroke, transient ischemic attacks, epileptic seizures, and dementia. (12 Dec 1998) |
| Sneddon's syndrome | <syndrome> A cerebral arteriopathy of unknown aetiology, characterised by noninflammatory intimal hyperplasia of medium-sized vessels associated with diffuse cutaneous livedo reticularis. (05 Mar 2000) |
| Sneddon-Wilkinson disease | A pruritic chronic annular eruption of sterile vesicles and pustules beneath the stratum corneum; bears a considerable clinical resemblance to dermatitis herpetiformis. Synonym: Sneddon-Wilkinson disease, subcorneal pustular dermatitis. (05 Mar 2000) |
| sneer | 1. To show contempt by turning up the nose, or by a particular facial expression. 2. To inssinuate contempt by a covert expression; to speak derisively. "I could be content to be a little sneared at." (Pope) 3. To show mirth awkwardly. The verb to sneer implies to cast contempt indirectly or by covert expressions. To jeer is stronger, and denotes the use of several sarcastic reflections. To scoff is stronger still, implying the use of insolent mockery and derision. Synonym: To scoff, gibe, jeer. Origin: OE. Sneren, Dan. Snrre to snarl or grin (like a dog); cf. Prov. E. Sneer to grin, sner to snort, snert to sneer at. See Snore. Source: Websters Dictionary (01 Mar 1998) |
| sneeze | 1. To expel air from the nose and mouth by an involuntary spasmodic contraction of the muscles of expiration. 2. An act of sneezing; a reflex excited by an irritation of the mucous membrane of the nose or, sometimes, by a bright light striking the eye. Origin: A.S. Fneosan (05 Mar 2000) |
| sneezeweed | <botany> A yellow-flowered composite plant (Helenium autumnale) the odour of which is said to cause sneezing. Source: Websters Dictionary (01 Mar 1998) |
| sneezewood | <botany> The wood of a South African tree. See Neishout. Source: Websters Dictionary (01 Mar 1998) |
| sneezewort | <botany> A European herbaceous plant (Achillea Ptarmica) allied to the yarrow, having a strong, pungent smell. Source: Websters Dictionary (01 Mar 1998) |
| sneezing | <physiology> The act of violently forcing air out through the nasal passages while the cavity of the mouth is shut off from the pharynx by the approximation of the soft palate and the base of the tongue. Source: Websters Dictionary (01 Mar 1998) |
| sneezing gas | A substance, such as a gas, that induces sneezing. Synonym: sneezing gas. (05 Mar 2000) |
| snell | A short line of horsehair, gut, etc, by which a fishhook is attached to a longer line. Source: Websters Dictionary (01 Mar 1998) |
| Snell's law | For two given media, the sine of the angle of incidence bears a constant relation to the sine of the angle of refraction. Synonym: Descartes' law, Snell's law. (05 Mar 2000) |