Crystal violet
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Crystal violet or gentian violet, also known as methyl violet 10B or hexamethyl pararosaniline chloride, is a triarylmethane dye used as a histological...
changes to violet with pH increasing toward 3.2. Methyl violet 10B has six methyl groups. It is known in medicine as Gentian violet (or crystal violet or pyoctanin(e))...
retains the primary stain, crystal violet. Gram-negative cells have a thinner peptidoglycan layer that allows the crystal violet to wash out on addition...
Staining (section Crystal violet)principal stain. Crystal violet stains both Gram positive and Gram negative organisms. Treatment with alcohol removes the crystal violet colour from gram...
change color. The media inhibits growth of Gram-positive organisms with crystal violet and bile salts, allowing for the selection and isolation of gram-negative...
Crystal violet lactone (CVL) is a leuco dye, a lactone derivate of crystal violet 10B. In pure state it is a slightly yellowish crystalline powder, soluble...
have a thin layer of peptidoglycan. Gram-positive bacteria take up the crystal violet stain used in the test, and then appear to be purple-coloured when seen...
Türk's solution (or Türk's fluid) is a hematological stain (either crystal violet or aqueous methylene blue) prepared in 99% acetic acid (glacial) and...- have a thick peptidoglycan layer in their cell wall, which retains the crystal violet during Gram staining, resulting in a purple color. Gram-negative bacteria...
samples are often yellow. It is an important precursor to dyes such as crystal violet. DMA was first reported in 1850 by the German chemist A. W. Hofmann...
bacteria are bacteria that unlike gram-positive bacteria do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation...
and therefore appear colorful. Another example of a leuco dye is the crystal violet lactone, which in its lactone form is colorless or slightly yellowish...
useful material for the removal of colouring agents (such as crystal violet, methyl violet 2B and methylene blue ) from dye wastewater. The tarap stem...
thermochromic droplets are actually a mixture of several chemicals—crystal violet lactone (the color-changing dye itself), benzotriazole (a weak acid)...- eosin counterstain to haematoxylin in the H&E stain. In Gram staining, crystal violet stains only Gram-positive bacteria, and safranin counterstain is applied...
- differential staining is the Gram stain. Gram staining uses two dyes: Crystal violet and Fuchsin or Safranin (the counterstain) to differentiate between...
Mycobacteria, can be stained with the Gram stain, but they do not take the crystal violet well and thus appear light purple, which can still potentially result...
(CC)C)C=C2)/C1=C C=C(N(C)C)C=C1. Ethyl green is made of crystal violet by adding an ethyl group; crystal violet is therefore a possible contaminant. Methyl green...
take up the Gram stain and counter-stain; bacteria that take up the crystal violet dye stain are referred to as "gram-positive," those that take up the...- 1884, is required. The bacteria are stained with several dyes such as crystal violet, iodine alcohol, and safranin. Gram positive cells are purple after...
- crystal violet (uncountable) A dye, derived from gentian violet, that is used as an acid-base indicator and as a biological stain.
- Ebony and Crystal by Clark Ashton Smith Rosa Mystica 19030Ebony and Crystal — Rosa MysticaClark Ashton Smith ROSA MYSTICA The secret rose we vainly
- made new. Ch. 12 "If a kiss could be seen I think it would look like a violet," said Priscilla. Anne glowed. "I'm so glad you SPOKE that thought, Priscilla
- the space between the molecules and causing the cell wall to trap the crystal violet-iodine complex within the cell. But in Gram-negative bacteria, the decolorizing