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In mycology a tissue or feature is said to be amyloid if it has a positive amyloid reaction when subjected to a crude chemical test using iodine as an ingredient of either Melzer's reagent or Lugol's solution, producing a blue to blue-black staining. The term "amyloid" is derived from the Latin amyloideus ("starch-like"). [1]
Melzer's reagent can be used to test whether spores are amyloid, nonamyloid, or dextrinoid. Spores that stain bluish-gray to bluish-black are amyloid; Spores that stain brown to reddish-brown are dextrinoid; This test is normally performed on white spored mushrooms. If the spores are not light colored, a change will not be readily apparent.
To date, 37 human proteins have been found to form amyloid in pathology and be associated with well-defined diseases. [2] The International Society of Amyloidosis classifies amyloid fibrils and their associated diseases based upon associated proteins (for example ATTR is the group of diseases and associated fibrils formed by TTR). [3]
Melzer's reagent is an aqueous solution of chloral hydrate, potassium iodide, and iodine.Depending on the formulation, it consists of approximately 2.50-3.75% potassium iodide and 0.75–1.25% iodine, with the remainder of the solution being 50% water and 50% chloral hydrate.
Pages in category "Mycology" The following 104 pages are in this category, out of 104 total. ... Amyloid (mycology) Ant–fungus mutualism; Arbuscular mycorrhiza ...
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Standard applications: Masson's trichrome staining is widely used to study muscular pathologies (muscular dystrophy), cardiac pathologies , hepatic pathologies or kidney pathologies (glomerular fibrosis). It can also be used to detect and analyze tumors on hepatic and kidney biopsies.