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                                                Phosphotungstic acid-hematoxylin (PTAH) - histology slide
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                                                This is a histology slide of the tongue stained with phosphotungstic acid-hematoxylin (PTAH).  In this tongue, PTAH stains the collagen pink, fibrin blue, and striated muscle blue as well.
 Copyright © Colorado HistoPrep. Reprinted with permission.
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