haematoxylin

haematoxylin
n.
a colourless crystalline compound extracted from logwood (Haematoxylon campechianum) and used in various histological stains. When oxidized haematoxylin is converted to haematein, which imparts a blue colour to certain parts of cells, especially cell nuclei. Heidenhain's iron haematoxylin is used to stain sections that are to be photographed, since it gives great clarity at high magnification.

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  • Haematoxylin — IUPAC name 7,11b dihydroindeno[2,1 c]chromene 3,4,6a,9,10(6H) pentol …   Wikipedia

  • Haematoxylin — H[ae]m a*tox y*lin ( t[o^]ks [i^]*l[i^]n), n. [See {H[ae]matoxylon}.] (Chem.) The coloring principle of logwood. It is obtained as a yellow crystalline substance, {C16H14O6}, with a sweetish taste. Formerly called also {hematin}. [1913 Webster] …   The Collaborative International Dictionary of English

  • haematoxylin — haematoxylin. См. гематоксилин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • haematoxylin — Basophilic stain that gives a blue colour (to the nucleus of a cell for example), commonly used in conjunction with eosin that stains the cytoplasm pink/red. Various modifications of haematoxylin have been developed. The histopathologist s H & E… …   Dictionary of molecular biology

  • haematoxylin — n. a colourless crystalline compound extracted from logwood (Haematoxylon campechianum) and used in various histological stains. When oxidized haematoxylin is converted to haematein, which imparts a blue colour to certain parts of cells,… …   Medical dictionary

  • haematoxylin — n. crystalline substance obtained from logwood and used in the production of various dyes and stains (Chemistry) …   English contemporary dictionary

  • haematoxylin — [ˌhi:mə tɒksɪlɪn] (US hematoxylin) noun Chemistry a colourless compound present in logwood, which is easily converted into dyes and is used as a biological stain. Origin C19: from mod. L. Haematoxylum (genus name), from haemato + Gk xulon wood …   English new terms dictionary

  • haematoxylin — /himəˈtɒksələn/ (say heemuh toksuhluhn) noun 1. a leguminous plant of a genus Haematoxylon, of which only one species, H. campechianum, the logwood tree, is known. 2. the wood of the logwood. 3. Chemistry a colourless or pale yellow crystalline… …  

  • haematoxylin — haematoxˈylin noun A dye obtained from logwood • • • Main Entry: ↑haem …   Useful english dictionary

  • Phosphotungstic acid haematoxylin — (PTAH) is a mix of haematoxylin with phosphotungstic acid, used in histology for staining. It stains some tissue in contrasting colors in a way similar to haematoxylin and eosin stain, as phosphotungstic acid binds to tissue proteins. It is used… …   Wikipedia

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