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The H&E staining procedure is the principal stain in histology [3] [7] [2] [5] in part because it can be done quickly, [7] is not expensive, and stains tissues in such a way that a considerable amount of microscopic anatomy [9] [10] is revealed, [7] [5] [4] and can be used to diagnose a wide range of histopathologic conditions. [8]
Hematoxylin staining shown as "basophilic" at top, seen with dual staining with hematoxylin and eosin (H&E). Haematoxylin stain is commonly followed (or counterstained) with another histologic stain, eosin. [10] [11] [1] When paired, this staining procedure is known as H&E staining, and is one of the most commonly used combinations in histology.
The aim of staining is to reveal cellular components; counterstains are used to provide contrast. The most commonly used stain in histology is a combination of hematoxylin and eosin (often abbreviated H&E). Hematoxylin is used to stain nuclei blue, while eosin stains the cytoplasm and the extracellular connective tissue matrix of most cells ...
A Ziehl–Neelsen stain is an acid-fast stain used to stain species of Mycobacterium tuberculosis that do not stain with the standard laboratory staining procedures such as Gram staining. This stain is performed through the use of both red coloured carbol fuchsin that stains the bacteria and a counter stain such as methylene blue.
In contrast to H&E, which is used as a general stain, there are many techniques that more selectively stain cells, cellular components, and specific substances. [12] A commonly performed histochemical technique that targets a specific chemical is the Perls' Prussian blue reaction, used to demonstrate iron deposits [12] in diseases like ...
The effects of the three chemicals in Bouin solution balance each other. Formalin causes cytoplasm to become basophilic but this effect is balanced by the effect of the picric acid. This results in excellent nuclear and cytoplasmic H&E staining. The tissue hardening effect of formalin is balanced by the soft tissue fixation of picric and acetic ...
H&E stain. GAVE is usually diagnosed definitively by means of an endoscopic biopsy. [6] [7] [10] [20] The tell-tale watermelon stripes show up during the endoscopy. [7] Surgical exploration of the abdomen may be needed to diagnose some cases, especially if the liver or other organs are involved. [4]
The procedure is usually performed in a physician's office under local anesthetic. A small scalpel is utilized to cut around the visible tumor. Unlike a normal surgical excision, a Mohs surgery cut is performed at a beveling between 10 and 45 degrees to allow visibility of all skin layers during pathological diagnosis. [ 8 ]