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The KOH dissolves the skin cells, but leaves the Candida cells intact, permitting visualization of pseudohyphae and budding yeast cells typical of many Candida species.
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KOH and skin
* KOH test, a procedure in which potassium hydroxide is used to dissolve skin and reveal fungal cells under the microscope
Athlete's foot can usually be diagnosed by visual inspection of the skin, but where the diagnosis is in doubt direct microscopy of a potassium hydroxide preparation ( known as a KOH test ) may help rule out other possible causes, such as eczema or psoriasis.
A KOH preparation is performed by taking skin scrapings which are covered with 10 % to 20 % potassium hydroxide applied to the microscope slide ; after a few minutes the skin cells are degraded by the KOH and the characteristic fungal hyphae can then be seen microscopically, either with or without the assistance of a stain.
KOH and budding
Once suspected, the diagnosis of blastomycosis can usually be confirmed by demonstration of the characteristic broad based budding organisms in sputum or tissues by KOH prep, cytology, or histology.
KOH and .
Usually, the application of KOH is needed to increase the pH to this range.
A general guideline is about 600 µl 0. 1M KOH per 250 ml GM.
# Release of a fishy odor on adding alkali — 10 % potassium hydroxide ( KOH ) solution.
A single drop of 10 % potassium hydroxide ( KOH ) solution is then added to the specimen.
These include molding and plating, wet etching ( KOH, TMAH ) and dry etching ( RIE and DRIE ), electro discharge machining ( EDM ), and other technologies capable of manufacturing small devices.
As such, consideration should be given to using frits in such solutions and they should be rapidly and thoroughly rinsed when cleaning the glass with bases like KOH.
# the alkaline chemical environment provided by the alkali reserve ( KOH, NaOH ) and the portlandite ( calcium hydroxide ) contained in the hardened cement paste causes a passivating film to form on the surface of the steel, making it much more resistant to corrosion than it would be in neutral or acidic conditions.
Alkali catalysts such as sodium hydroxide ( NaOH ), potassium hydroxide ( KOH ), or sodium carbonate ( Na < sub > 2 </ sub > CO < sub > 3 </ sub >) are used to prepare low-molecular-weight polyethylene glycol.
The true Amanita verna fruits in spring and turns yellow with KOH solution, whereas A. phalloides never does.
The alkaline electrolyte ( commonly KOH ) is not consumed in this reaction and therefore its specific gravity, unlike in lead – acid batteries, is not a guide to its state of charge.
In the 1930s it was found ( Beck ) that praseodymium dioxide could be precipitated from KOH / NaOH eutectic melts, by oxidation by electrochemistry, or by sodium chlorate.
Sodium hydroxide ( NaOH ) gives " hard soap ", whereas, when potassium hydroxide ( KOH ) is used, a soft soap is formed.
In the " amine whiff test " 10 % KOH is added to the discharge, a positive result indicated if a fishy smell is produced.
Initially the only chemical treatment used by researchers was treatment with KOH to remove humic substances ; defloculation was accomplished through surface treatment or ultra-sonic treatment, although sonification may cause the pollen exine to rupture.
Any strong base capable of deprotonating the alcohol will do ( e. g. NaOH, KOH, Sodium methoxide, etc .).
Commonly the base ( KOH, NaOH ) is dissolved in the alcohol to make a convenient method of dispersing the otherwise solid catalyst into the oil.
The KOH preparation has an excellent positive predictive value, but occasionally false negative results may be obtained, especially if treatment with an antifungal medication has already begun.
dissolves and skin
Despite the fact that their skin is preserved, their bones are generally not, as the acid in the peat dissolves the calcium phosphate of bone.
Also like the cypriniforms, the gonorynchiforms produce a substance from their skin when injured that dissolves into the water and acts an alarm signal to other fish.
He says he feels fine, yet he has no heart beat and his skin is cold to the touch, Rebecca surmises he has about twelve hours before the reanimation process ends and he dissolves into a puddle of mush.
Therefore, hirudin prevents or dissolves the formation of clots and thrombi ( i. e., it has a thrombolytic activity ), and has therapeutic value in blood coagulation disorders, in the treatment of skin hematomas and of superficial varicose veins, either as an injectable or a topical application cream.
dissolves and cells
As PMCs begin to undergo an epithelial-to-mesenchymal transition, the lamina which binds them dissolves to begin the mechanical release of the cells.
Goblet cells are glandular simple columnar epithelial cells whose sole function is to secrete mucin, which dissolves in water to form mucus.
dissolves and leaves
* 1945 – The Nazi occupation army surrenders and leaves Northern Italy after a general partisan insurrection by the Italian resistance movement ; the puppet fascist regime dissolves and Benito Mussolini tries to escape.
Like the other alkali metals, sodium dissolves in ammonia and some amines to give deeply coloured solutions ; evaporation of these solutions leaves a shiny film of metallic sodium.
He dissolves a poison called " Dragon Sand " in a glass of wine and delivers it to the king after Peter leaves.
The death of a church president dissolves the First Presidency, and leaves the President of the Quorum of the Twelve Apostles as the senior leader of the church.
The residue is then melted together with sodium peroxide, which dissolves all the metals and leaves the iridium.
Ironically, the Authority dies of his own frailty when Will and Lyra unknowingly free him from the crystal prison where Metatron trapped him ; as he leaves the cage, he is so feeble that mere exposure to the atmosphere dissolves him into thin air.
The subsequent leaching at higher temperatures dissolves the chromates and leaves the insoluble iron oxide.
Their relationship dissolves and they bid a final farewell as Jan's train leaves again for London.
The slowly-crumbling marriage finally dissolves when Michael leaves Pauline on their 30th anniversary.
dissolves and yeast
* Rapid-rise yeast is a variety of dried yeast ( usually a form of instant yeast ) that is of a smaller granular size, thus it dissolves faster in dough, and it provides greater carbon dioxide output to allow faster rising.
dissolves and typical
The picture comes to life, and in typical Busoni fashion, the scene immediately dissolves into a fantastical Chinese temple.
It differs from typical hard candy in that it creates a fizzy reaction when it dissolves in one's mouth.
A 2-3 µm layer of gold dissolves completely within one second during typical wave soldering conditions.
dissolves and many
Mercury dissolves many metals, such as gold, silver, and tin, to form amalgams ( an alloy in a soft paste, or liquid form at ambient temperature ).
Soluble fiber, found in oats, peas, beans, and many fruits, dissolves in water in the intestinal tract to produce a gel which slows the movement of food through the intestines.
1.447 seconds.