| lead hydroxide stain | <technique> A stain for electron microscopy; after aldehyde fixation, alkaline lead hydroxide preferentially stains RNA, but after OsO4 fixation, it reacts largely with osmium in tissues to give a general stain; in addition to binding to cytomembranes, it also stains carbohydrates (e.g., glycogen). (05 Mar 2000) |
|---|---|
| Friedlander's stain | <technique> For capsules, an obsolete stain employing gentian violet. (05 Mar 2000) |
| Leishman's stain | <technique> A polychromed eosin-methylene blue stain used in the examination of blood films. (05 Mar 2000) |
| Leishman stain | <pathology, procedure> Romanovsky type stain, a mixture of basic and acid dyes used to stain blood smears and that differentially stains various classes of leucocytes. (18 Nov 1997) |
| Lendrum's phloxine-tartrazine stain | <technique> A stain for demonstrating acidophilic inclusion bodies, which appear red on a yellow background; nuclei stain blue, but Negri bodies do not stain. (05 Mar 2000) |
| Lepehne-Pickworth stain | <technique> A staining technique for haemoglobin and other haem-containing substances in cryostat or frozen sections, which utilises the presence of tissue peroxidase to oxidise benzidine to a blue quinhydrone. (05 Mar 2000) |
| Levaditi stain | <technique> A silver nitrate stain for blackening spirochetes in tissue sections. (05 Mar 2000) |
| Lillie's allochrome connective tissue stain | <technique> A procedure using PAS, haematoxylin, picric acid, and methyl blue; used for distinction between basement membrane and reticulin, and for demonstration of arteriosclerotic lesions. (05 Mar 2000) |
| Lillie's azure-eosin stain | <technique> A stain in which an azure eosinate solution is used to stain bacteria and rickettsiae in tissues. (05 Mar 2000) |
| Lillie's ferrous iron stain | <technique> A method using potassium ferrocyanide in acetic acid which demonstrates melanins as a deep green colour; lipofuscins and haem pigments are unreactive. (05 Mar 2000) |
| Lillie's sulfuric acid Nile blue stain | <technique> A technique for showing fatty acids when present in high concentrations. (05 Mar 2000) |
| Lison-Dunn stain | <technique> A technique using leuco patent blue V and hydrogen peroxidase to demonstrate haemoglobin peroxidase on time sections and smears. (05 Mar 2000) |
| Loeffler's caustic stain | <technique> A stain for flagella, utilizing an aqueous solution of tannin and ferrous sulfate with the addition of an alcoholic fuchsin stain. (05 Mar 2000) |
| Loeffler's stain | <technique> A stain for flagella; the specimen is treated with a mixture of ferrous sulfate, tannic acid, and alcoholic fuchsin, then stained with aniline-water fuchsin or gentian violet made alkaline with sodium hydroxide solution. (05 Mar 2000) |
| Luna-Ishak stain | <technique> A staining method using celestine blue and acid fuchsin in which bile canaliculi stain pink to red. (05 Mar 2000) |