| estradiol-17 beta sulfotransferase | <enzyme> Specific for estradiol 17beta; not the same as EC 2.8.2.15 Registry number: EC 2.8.2.- (26 Jun 1999) |
|---|---|
| estradiol antagonists | Compounds which inhibit or antagonise the biosynthesis or action of estradiol. (12 Dec 1998) |
| estradiol dehydrogenases | <enzyme> Enzymes that catalyze the oxidation of estradiol at the 17-hydroxyl group in the presence of NAD+ or NADP+ to yield estrone and NADH or NADPH. The 17-hydroxyl group can be in the alpha- or beta-configuration.2 Chemical name: Estradiol-17 beta:NAD(P)+ 17-oxidoreductase Registry number: EC 1.1.1.62 (12 Dec 1998) |
| estradiol receptor tyrosine kinase | <enzyme> Calcium and calmodulin dependent Registry number: EC 2.7.1.- Synonym: ertk (26 Jun 1999) |
| ethinyl estradiol | <chemical> (17 alpha)-19-norpregna-1,3,5(10)-trien-20-yne-3,17-diol. A semisynthetic oestrogen with high oral oestrogenic potency. It is often used as the oestrogenic component in oral contraceptives. Pharmacological action: antineoplastic agent, hormonal, oestrogens, synthetic. Chemical name: 19-Norpregna-1,3,5(10)-trien-20-yne-3,17-diol, (17alpha)- (12 Dec 1998) |
| ethinyl estradiol-norgestrel combination | <chemical> Ethinyl estradiol and norgestrel given in fixed proportions. It has proved to be an effective contraceptive. Pharmacological action: contraceptives, oral, combined, contraceptives, oral, synthetic, contraceptives, postcoital, synthetic. (12 Dec 1998) |
| ethynyl estradiol | 17a-ethynyl-1,3,5-estratriene-3,17-diol;a semisynthetic derivative of 17b-estradiol; active by mouth, with a long half-life, it is among the most potent of known oestrogenic compounds; used in oral contraceptive preparations. Synonym: ethinyl estradiol. Estradiol undecylate, an esterified natural oestrogen for parenteral use. Estradiol valerate, estra-1,3,5(10)-triene-3,17b-diol 17-valerate;same actions and uses as estradiol, but with a prolonged duration of action; administered in sesame oil by intramuscular injection. (05 Mar 2000) |
| absolute unit | A unit whose value is constant regardless of place or time and not derived from dependent on gravitation. (05 Mar 2000) |
| alexin unit | The smallest amount (highest dilution) of complement that will cause haemolysis of a unit of red blood cells in the presence of a haemolysin unit. Synonym: alexin unit. (05 Mar 2000) |
| Allen-Doisy unit | The quantity of oestrogen capable of producing in a spayed mouse a characteristic change in the vaginal epithelium, namely, disappearance of leukocytes and appearance of cornified cells, as determined by a vaginal smear; equal approximately to one-half of an estrone unit. Synonym: mouse unit. (05 Mar 2000) |
| amboceptor unit | haemolysin unit |
| androgen unit | The androgenic activity of 100 ug (0.1 mg) of crystalline androsterone as assayed by the comb growth response in capons. (05 Mar 2000) |
| antigen unit | The smallest amount of antigen that, in the presence of specific antiserum, will fix 1 complement unit. (05 Mar 2000) |
| antitoxin unit | A unit expressing the strength or activity of an antitoxin; in general, determined with reference to a preserved standard preparation of antitoxin. See: L doses. (05 Mar 2000) |
| antivenene unit | The amount of antivenum which, injected in the ear vein, will protect 1 g weight of rabbit against a fatal dose of snake venom. (05 Mar 2000) |