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Pas stain

PAS stain --> periodic acid Schiff stain

(Science: technique) A histochemical technique based on periodic acid oxidation of a substance containing the 1,2-glycol grouping.

It is used for staining carbohydrates as the resulting dialdehyde reacts with Schiff reagent to form a coloured product.

Substances that can be demonstrated include carbohydrates, mucins, cartilage matrix, collagen, reticulum, basement membranes, fibrin, thyroid colloid, amyloid, glomerular hyaline deposits, and a number of other secretions or tissue constituents.

Also used in for staining gels on which glycoproteins have been run.

See: periodic acid Schiff reaction

Synonym: pAS stain.


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The Fiber Disease

... rhinosporidiosis. A formaldehyde-fixed section of human nasal polyp was stained with Periodic acid-Schiff (PAS) and visualized by bright-field microscopy at 400X magnification. The thick walls of immature ...

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by al
Mon Dec 25, 2006 1:39 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 4990881

The Fiber Disease

... a pigmented seborrheic keratosis. No fungal elements were identified in PAS stain sections. I hope this information is helpful to you somehow, but I fear it is as you ...

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by yyz
Sun Dec 25, 2005 1:44 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 4990881


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