phosphotungstic acid

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phos·pho·tung·stic ac·id (PTA),

(fos-fō-tŭng'stik as'id),
A mixture of phosphoric and tungstic acids; a protein precipitant and reagent for arginine, lysine, histidine, and cystine; used with hematoxylin for nuclear and muscle staining; also used in electron microscopy as a stain for collagen and as a negative stain.

phos·pho·tung·stic ac·id

(PTA) (fos'fō-tŭng'stik as'id)
A mixture of phosphoric and tungstic acids; a protein precipitant and reagent for arginine, lysine, histidine, and cystine; used with hematoxylin for nuclear and muscle staining; also used in electron microscopy as a stain for collagen and as a negative stain.

phos·pho·tung·stic ac·id

(PTA) (fos'fō-tŭng'stik as'id)
A mixture of phosphoric and tungstic acids; a protein precipitant and reagent for arginine, lysine, histidine, and cystine; used with hematoxylin for nuclear and muscle staining; also used in electron microscopy as a stain for collagen and as a negative stain.

phosphotungstic acid (PTA),

n a mixture of phosphoric and tungstic acids used with hematoxylin for staining muscle tissue and cell nuclei. It is also used as a negative stain of collagen in electron microscopy.
References in periodicals archive ?
A uric acid evaluation, for example, would summarize survey results for the uricase, phosphotungstate, and iron reduction methods.
Estimation of cholesterol and HDL cholesterol was done by CHOD--POD phosphotungstate method.
The Folin-Ciocalteu reagent is a mixture of phosphomolybdate and phosphotungstate and is used to assay phenolic and polyphenolic antioxidant activity.
Biochemical investigation: Fasting venous blood from all the patients and control subjects were collected in plain vial for the analysis of triglyceride (TG) levels by lipoprotein lipase-peroxidase method (11), total cholesterol (TC) levels by cholesterol oxidase method (12) and high density lipoprotein (HDL) levels by phosphotungstate magnesium chloride method (13).
High density lipoprotein was measured by using phosphotungstate precipitation method.
Precipitation of alpha lipoproteins in serum by sodium phosphotungstate in the presence of magnesium chloride.
To observe the virus particles, the culture supernatant was ultracentrifuged at 100,000 x g, and the precipitates were negatively stained with 2% phosphotungstate.
Serum HDL cholesterol was measured after precipitation by magnesium chloride phosphotungstate (23).
We measured HDL cholesterol after precipitation of the apolipoprotein B-containing lipoproteins with magnesium phosphotungstate and calculated LDL cholesterol by the Friedewald formula.
Serum Total cholesterol (TC) was estimated by cholesterol esterase method and High Density Lipoprotein (HDL) by cholesterol esterase method after precipitation using phosphotungstate method.

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