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phosphotungstic acid

Pronunciation: fos-fo-tung'stik as'id

Definition: 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.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.