| bipennate muscle | <anatomy> A muscle with a central tendon toward which the fibres converge on either side like the barbs of a feather. Synonym: musculus bipennatus. (05 Mar 2000) |
|---|---|
| biperforate | Having two foramina or perforations. (05 Mar 2000) |
| biperiden | <chemical> A muscarinic antagonist that has effects in both the central and peripheral nervous systems. It has been used in the treatment of arteriosclerotic, idiopathic, and postencephalitic parkinsonism. It has also been used to alleviate extrapyramidal symptoms induced by phenothiazine derivatives and reserpine. Pharmacological action: antiparkinson agents, muscarinic antagonists, parasympatholytics. Chemical name: 1-Piperidinepropanol, alpha-bicyclo(2.2.1)hept-5-en-2-yl-alpha-phenyl- (12 Dec 1998) |
| bipetalous | <botany> Having two petals. Origin: Pref. Bi- + petalous. Source: Websters Dictionary (01 Mar 1998) |
| biphasic | <biology> Having two phases, having both a sporophytic and a gametophytic phase in the life cycle. (19 Jan 1998) |
| biphasic growth curve | <cell culture, microbiology> A particular type of growth curve seen in cultured microorganisms in which they have two exponential growth stages separated by a plateau phase. This double-hump curve is produced when the microbes are cultured using two carbon sources, one of which must be used up before the second can be used. (19 Jan 1998) |
| biphasic insulin | <protein> A type of insulin that is a mixture of intermediate- and fast-acting insulin. (09 Oct 1997) |
| biphasic response | Two separate and distinct responses that are separated in time, immediate reaction to an antigenic challenge followed by a recurrence of symptoms after an interval of quiescence. (05 Mar 2000) |
| biphenamine hydrochloride | Xenysalate hydrochloride; 2-diethylaminoethyl 2-hydroxy-3-phenylbenzoate hydrochloride;an antiseborrheic agent. (05 Mar 2000) |
| biphenotypic | Pertaining to or characterised by biphenotypy. (05 Mar 2000) |
| biphenotypy | The expression of markers of more than one cell type by the same cell, as in certain leukaemias. (05 Mar 2000) |
| biphenyl | <chemistry> A white crystalline substance, C6H5.C6H5, obtained by leading benzene through a heated iron tube. It consists of two benzene or phenyl radicals united. Origin: Pref. Di- + phenyl. Source: Websters Dictionary (01 Mar 1998) |
| biphenyl-2,3-dioxygenase | <enzyme> Converts polychlorinated biphenyls and biphenyls to biphenyl-2,3-dihydrodiol; a multicomponent enzyme containing a two-subunit iron-sulfur protein (bpha1 and a2), a ferredoxin (bpha3), and a reductase (bpha4); amino acid sequence given in first source Registry number: EC 1.14.99.- Synonym: bpha gene product (26 Jun 1999) |
| biphenyl-4-hydroxylase | <enzyme> Mixed function oxidase Registry number: EC 1.14.14.- (26 Jun 1999) |
| bipinnaria | <zoology> The larva of certain starfishes as developed in the free-swimming stage. Origin: NL, fr. L. Bis twice + pinna feather. Source: Websters Dictionary (01 Mar 1998) |