metachromasia


metachromasia
1. The condition in which a cell or tissue component takes on a color different from the dye solution with which it is stained. SYN: metachromatism (2). 2. A change in the characteristic color of certain basic thiazine dyes, such as toluidine blue, when the dye molecules are bound in proximate array to tissue polyanionic polymers, such as glycosaminoglycans. [meta- + G. chroma, color]

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meta·chro·ma·sia .met-ə-krō-'mā-zh(ē-)ə n
1) the property of various tissues of staining in a different color (as when treatment with a blue aniline dye makes a cellular element red)
2) the property of various biologic stains that permits a single dye to stain different tissue elements in different colors

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n.
1. the property of a dye of staining certain tissues or cells a colour that is different from that of the stain itself.
2. the variation in colour produced in certain tissue elements that are stained with the same dye.
3. abnormal coloration of a tissue produced by a particular stain.
metachromatic adj.

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meta·chro·ma·sia (met″ə-kro-maґzhə) [meta- + Gr. chrōma color] 1. a condition in which tissues do not stain true with a given stain. 2. staining in which the same stain colors different tissues in different tints. 3. the change of color produced by staining.

Medical dictionary. 2011.

Look at other dictionaries:

  • metachromasia — См. metachromasy …   Dictionary of invertebrate zoology

  • metachromasia — (= metachromatic staining) The situation where a stain when applied to cells or tissues gives a colour different from that of the stain solution …   Dictionary of molecular biology

  • metachromasia — noun A characteristic change in the colour of staining carried out in biological tissues, exhibited by certain aniline dyes when they bind to particular substances present in these tissues, called chromotropes. Syn: metachromasy Ant …   Wiktionary

  • metachromasia — meta·chro·ma·sia …   English syllables

  • metachromasia — metachromatism; n. 1) the property of a dye of staining certain tissues or cells a colour that is different from that of the stain itself. 2) the variation in colour produced in certain tissue elements that are stained with the same dye. 3)… …   The new mediacal dictionary

  • metachromasia — …   Useful english dictionary

  • Метахромазия (Metachromasia, Metachromatism) — 1. Свойство красителя окрашивать различные ткани и клетки в цвет, отличный от цвета самого красителя. 2. Изменение цвета, возникающее в различных элементах ткани при ее окрашивании красителем того же цвета. 3. Аномальное окрашивание ткани,… …   Медицинские термины

  • metachromatism — metachromasia …   The new mediacal dictionary

  • метахромазия — (metachromasia; мета + греч. chroma цвет, окраска) окрашивание гистологических структур в цвет, несвойственный данному красителю, обусловленное его взаимодействием с некоторыми биологически активными веществами (в основном мукополисахаридами и… …   Большой медицинский словарь

  • Метахромази́я — (metachromasia; Мета + греч. chroma цвет, окраска) окрашивание гистологических структур в цвет, несвойственный данному красителю, обусловленное его взаимодействием с некоторыми биологически активными веществами (в основном мукополисахаридами и… …   Медицинская энциклопедия