| cell-free extract | <cell culture> A liquid that is a mixture of the contents of a particular type of cell, sometimes the organelles are also filtered out of the liquid. (26 Mar 1998) |
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| goulards extract | <medicine> An aqueous solution of the subacetate of lead, used as a lotion in cases of inflammation. Goulard's cerate is a cerate containing this extract. Origin: Named after the introducer, Thomas Goulard, a French surgeon. Source: Websters Dictionary (01 Mar 1998) |
| chief cell of parathyroid gland | A round clear cell with a centrally located nucleus; secretes parathyroid hormone. (05 Mar 2000) |
| water-clear cell of parathyroid | A variety of chief cell, so-called because the cytoplasm contains much glycogen that is not preserved or stained in the usual preparation. Synonym: wasserhelle cell. (05 Mar 2000) |
| pollen extract | Liquid obtained by extracting the protein from the pollen of plants used for diagnostic testing or treatment. (05 Mar 2000) |
| hormone, parathyroid | See Hormone, parathormone. (12 Dec 1998) |
| hydroalcoholic extract | A solid extract obtained by extracting the soluble principles of the drug with alcohol and water, followed by evaporation of the solution. (05 Mar 2000) |
| equivalent extract | A fluidextract of the same strength, weight for weight, as the original drug. Synonym: valoid. (05 Mar 2000) |
| extract | <pharmacology> A concentrated preparation of a vegetable or animal drug obtained by removing the active constituents therefrom with a suitable menstruum, evaporating all or nearly all the solvent and adjusting the residual mass or powder to a prescribed standard. Extracts are prepared in three forms, semiliquid or of syrupy consistency, pilular or solid and as dry powder. Origin: L. Extractum (18 Nov 1997) |
| yeast extract agar | A medium used to induce sporulation and reduce vegetative growth in the cultivation of fungi. (05 Mar 2000) |
| liquid extract | Pharmacopeial liquid preparation of vegetable drugs, made by percolation, containing alcohol as a solvent or as a preservative, or both, and so made that each milliliter contains the therapeutic constituents of 1 g of the standard drug that it represents. Synonym: liquid extract. (05 Mar 2000) |