metachromasia
/ˌmɛtəkrə(ʊ)ˈmeɪzɪə
/noun [mass noun] Biology
1The property of certain biological materials of staining a different colour from that of the stain used.In these cases, metachromasy is an indication of dimerization and polymerization of the adsorbed dyes....
- The metachromasy was found to be independent of phase transition temperature of vesicles.
- The change in color of a dye which results from metachromasy is not due to a change in pH of an aqueous solution containing it.
1.1The property of certain stains of changing colour in the presence of certain biological materials.Under these conditions PBs appeared light blue, while metachromasia was observed for globoid inclusions that stained purple-blue.
Derivatives
metachromatic
- Fragments of metachromatic chondromyxoid extracellular material contained cells that were reminiscent of chondrocytes.
- These include the metachromatic stains or enzymatic stains.
- The classic leukodystrophies include adrenoleukodystrophy, Krabbe's globoid cell, and metachromatic leukodystrophy, and a few other less well known entities.
Origin
Early 20th century: modern Latin, from meta- (expressing change) + Greek khrōma 'colour'.
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