| ephedra | Ephedra equisetina (family Gnetaceae). Ma Huang; the plant source for the alkaloid ephedrine. Indigenous to China and India, it is 0.75 to over 1% ephedrine; also contains some pseudoephedrine. (05 Mar 2000) |
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| ephedrine | <chemical> An alpha- and beta-adrenergic agonist that may also enhance release of norepinephrine. It has been used in the treatment of several disorders including asthma, heart failure, rhinitis, and urinary incontinence, and for its central nervous system stimulatory effects in the treatment of narcolepsy and depression. It has become less extensively used with the advent of more selective agonists. Pharmacological action: adrenergic alpha-agonists, adrenergic beta-agonists, adrenergic agents, appetite depressants, bronchodilator agents, central nervous system stimulants, sympathomimetic, vasoconstrictor agents. Chemical name: Benzenemethanol, alpha-(1-(methylamino)ethyl)-, (R-(R*,S*))- (12 Dec 1998) |
| ephedrine-NAD oxidoreductase | <enzyme> Forms methylbenzoylcarbinol and methylamine Registry number: EC 1.5.1.- Synonym: ephedrine-nad oxidoreductase (deaminating) (26 Jun 1999) |
| ephelis | Synonym: freckle. Origin: G. (05 Mar 2000) |
| ephemera | 1. <medicine> A fever of one day's continuance only. 2. <entomology> A genus of insects including the day flies, or ephemeral flies. See Ephemeral fly, under Ephemeral. Origin: NL, fr. Gr. A day fly, fr. Daily, lasting but a day; over + day. Source: Websters Dictionary (01 Mar 1998) |
| ephemeral | Short-lived. (09 Oct 1997) |
| ephemeral fever | An ephemerovirus infection of cattle caused by bovine ephemeral fever virus (ephemeral fever virus, bovine). It is characterised by respiratory symptoms, increased oropharyngeal secretions and lacrimation, joint pains, tremor, and stiffness. (12 Dec 1998) |
| ephemeral fever of cattle | An acute febrile disease of cattle in many African and Asian countries and Australia, caused by a rhabdovirus and characterised by stiffness and lameness. Synonym: bovine ephemeral fever. (05 Mar 2000) |
| ephemeral fever virus | A rhabdovirus that causes ephemeral fever of cattle. (05 Mar 2000) |
| ephemeral fever virus, bovine | The type species of ephemerovirus causing disease in cattle. Transmission is by haematophagous arthropods and the virus has been isolated from both culicoides and mosquitoes. (12 Dec 1998) |
| ephemeran | <zoology> One of the ephemeral flies. Source: Websters Dictionary (01 Mar 1998) |
| ephemeris | Origin: L, a diary, Gr, also, a calendar, fr. See Ephemera. 1. A diary; a journal. 2. <anatomy> A publication giving the computed places of the heavenly bodies for each day of the year, with other numerical data, for the use of the astronomer and navigator; an astronomical almanac; as, the "American Ephemeris and Nautical Almanac." Any tabular statement of the assigned places of a heavenly body, as a planet or comet, on several successive days. 3. A collective name for reviews, magazines, and all kinds of periodical literature. Source: Websters Dictionary (01 Mar 1998) |
| ephemeron | Origin: NL. See Ephemera. <zoology> One of the ephemeral flies. Source: Websters Dictionary (01 Mar 1998) |
| ephemerovirus | A genus of the family rhabdoviridae which primarily infect cattle. Ephemeral fever virus, bovine is the type species. (12 Dec 1998) |
| ephippium | 1. <anatomy> A depression in the sphenoid bone; the pituitary fossa. 2. <zoology> A saddle-shaped cavity to contain the winter eggs, situated on the back of Cladocera. Origin: L, saddle cloth, fr. Gr.; on + horse. Source: Websters Dictionary (01 Mar 1998) |