| alum-haematoxylin | A purple nuclear stain used in histology; a mixture of an aqueous solution of ammonium alum and an alcoholic solution of haematoxylin which is ripened or oxidised to haematein. (05 Mar 2000) |
|---|---|
| alum root | <botany> A North American herb (Heuchera Americana) of the Saxifrage family, whose root has astringent properties. Source: Websters Dictionary (01 Mar 1998) |
| alum shale | <chemical> A variety of shale or clay slate, containing iron pyrites, the decomposition of which leads to the formation of alum, which often effloresces on the rock. Source: Websters Dictionary (01 Mar 1998) |
| alum stone | <chemical> A subsulphate of alumina and potash; alunite. Source: Websters Dictionary (01 Mar 1998) |
| burnt alum | Alum deprived of its water of crystallization by heat; an astringent dusting powder. Synonym: burnt alum. (05 Mar 2000) |
| cake alum | Astringent detergent for skin ulcers. Synonym: cake alum. (05 Mar 2000) |
| Gomori's chrome alum haematoxylin-phloxine stain | <technique> A technique used to demonstrate cytoplasmic granules, after Bouin's or formalin-Zenker fixatives, using oxidised haematoxylin plus phloxine; in the pancreas, beta cells are blue, alpha and delta cells are red, and zymogen granules are red to unstained; in the pituitary, alpha cells are pink, beta cells and chromophobes are gray-blue, and nuclei are purple to blue. (05 Mar 2000) |
| roche alum | <chemistry> A kind of alum occuring in small fragments; so called from Rocca, in Syria, whence alum is said to have been obtained; also called rock alum. Source: Websters Dictionary (01 Mar 1998) |
| chrome alum | The sulfate of chromium and potassium; used as a mordant in histologic staining. (05 Mar 2000) |
| chrome alum haematoxylin-phloxine stain | <technique> A stain used to demonstrate pancreatic islet cells; alpha cells appear red, beta cells blue or unstained. (05 Mar 2000) |
| whey alum | An astringent and styptic preparation made by boiling alum (1 oz.) in milk (10 oz.). (05 Mar 2000) |
| potassium alum | AlK(SO4)2;an astringent and styptic; also used in veterinary medicine for ulcerative stomatitis, leukorrhoea, and conjunctivitis. Synonym: potassium alum. (05 Mar 2000) |
| dried alum | Alum deprived of its water of crystallization by heat; an astringent dusting powder. Synonym: burnt alum. (05 Mar 2000) |
| iron alum | An astringent and styptic. Synonym: ammonium ferric sulfate, ferric alum, iron alum. (05 Mar 2000) |
| Einarson's gallocyanin-chrome alum stain | <technique> A method for staining both RNA and DNA a deep blue; with proper controls, nucleic acid content of stained cells and nuclei may be estimated by cytophotometry; also useful for Nissl substance. (05 Mar 2000) |