Eosinophilic
1121558
215145085
2008-05-26T22:22:41Z
130.225.107.134
Added pic
[[Image:Basophil.jpg|thumb|A [[basophil granulocyte]] is surrouned by lightly staining eusinophilic [[erythrocyte]]s in an H&E staining.]]
{{Mergeto|Eosin|date=July 2007}}
{{main|Eosin}}
'''Eosinophilic''' means ''loves eosin'', and refers to the [[stain]]ing of certain [[Biological tissue|tissues]], [[cell (biology)|cells]], or [[organelle]]s after they been washed with [[eosin]], a [[dye]].
Eosin is an [[acidic]] dye; thus, the structure being stained is [[Base (chemistry)|basic]].
Eosinophilic describes the appearance of cells and structures seen in [[histological section]]s that take up the staining dye [[eosin]]. This is a bright-pink dye that stains the cytoplasm of cells, as well as extracellular proteins such as [[collagen]].
Such eosinophilic structures are, in general, composed of [[protein]].
The stain eosin is usually combined with a stain called [[hematoxylin]] to produce a hematoxylin and eosin-stained [[section]] (also called an H&E, HE or H+E section). This is the most widely-used histological stain in medical diagnosis, for example, when a [[pathologist]] examines a [[biopsy]] of a suspected cancer, the biopsy will have been stained with H&E.
Some structures seen inside cells are described as being eosinophilic, for example, [[Lewy body|Lewy bodies]], [[Mallory body|Mallory bodies]].
==See also==
* [[basophilic]] (affinity to [[Haematoxylin|hematoxylln]])
* [[Eosinophilia]]
[[Category:Anatomical pathology]]