- metachromatic stain
- a stain that colors certain cell constituents a color different from that of the stain itself.
Medical dictionary. 2011.
metachromatic stain
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stain — 1. To discolor. 2. To color; to dye. 3. A discoloration. 4. A dye used in histologic and bacteriologic technique. 5. A procedure in which a dye or combination of dyes and reagents is used to color the constituents of cells and tissues. For… … Medical dictionary
metachromatic — adjective Date: 1876 1. staining or characterized by staining in a different color or shade from what is typical < metachromatic granules in a bacterium > 2. having the capacity to stain different elements of a cell or tissue in different colors… … New Collegiate Dictionary
metachromatic — Denoting cells or dyes that exhibit metachromasia. SYN: metachromophil, metachromophile. * * * meta·chro·mat·ic krō mat ik adj 1) staining or characterized by staining in a different color or shade from what is typical <metachromatic… … Medical dictionary
Albert diphtheria stain — a stain containing toluidine blue and methyl (or malachite) green. Following treatment with iodine solution, the metachromatic granules appear black, the bars dark green to black, and the remainder of the diphtheria bacillus a light green … Medical dictionary
thionine — Amidophenthiazine; a dark green powder, giving a purple solution in water; useful as a basic stain in histology for chromatin and mucin because of its metachromatic properties. SYN: Lauth violet. * * * thi·o·nine … Medical dictionary
acridine orange — 3,6 bis(dimethylamino)acridine hydrochloride; a basic fluorescent dye useful as a metachromatic stain for nucleic acid s; also used in screening cervical smears for abnormal and malignant cells, where unusual amounts of DNA and RNA occur during… … Medical dictionary
Acridine — Chembox new ImageFile=Acridine chemical structure.png ImageSize=250px IUPACName=Acridine OtherNames= Section1= Chembox Identifiers CASNo=260 94 6 PubChem=9215 SMILES=C1=CC=C2C(=C1)C=C3C=CC=CC3=N2 Section2= Chembox Properties C=13|H=9|N=1… … Wikipedia
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
Babes-Ernst granules — Metachromatic intracellular deposits of polyphosphate found in Corynebacterium diphtheriae when the bacteria are grown on suboptimal media. Stain reddish with methylene blue or toluidine blue … Dictionary of molecular biology
body — 1. The head, neck, trunk, and extremities. The human b., consisting of head (caput), neck (collum), trunk (truncus), and limbs (membra). 2. The material part of a human, as distinguished from the … Medical dictionary
