periodic acid


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Related to periodic acid: Periodic acid Schiff

per·i·od·ic ac·id

(pēr'ē-ō'dik as'id),
1. HIO4, but existing in solution, usually in hydrated form; used in carbohydrate detection and analysis. Synonym(s): metaperiodic acid
2. Any of several iodic(VII) acids formed by the combination of iodine heptoxide, I2O7, with water.
References in periodicals archive ?
The nuclear cytoplasmic ratio is low (x100, periodic acid Schiff staining).
Impression cytology of normal transition zone from cornea to limbus (x40, periodic acid Schiff staining).
Grocott-Gomori's Methenamine Silver (GMS) and Periodic Acid Schiff (PAS) staining techniques can be used for diagnosis of fungi on cytology and histopathology.4
PERIODIC ACID SCHIFF (PAS) STAINING: The slide is deparaffinized in xylene, fixed in alcohol.
Thiosemicarbazide solution used after the sections oxidation by periodic acid, was able to completely block the PAS positivity in ganglionic ECM, confirming aldehyde grouping presence (Fig.
[4, 6] The tumor cell cytoplasm contains periodic acid Schiff positive and diastase labile material.
They are negative for periodic acid Schiff stain and show CK5 and CK6 [8, 9] positivity.
On Periodic acid Schiff and Gomori's methanamine silver stains, many short closely septate hyphae along with chains of budding yeast cells are seen in the cyst wall.
The bone marrow also showed similar cells, with karyomegaly, dense chromatin, and coalescing vacuoles which were Periodic Acid Schiff (PAS) negative.
[8] Moreover, the presence of the acidophilic granules gives the tumor cells a foamy appearance [9] and a diastase-resistance periodic acid Schiff reaction.

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