carmine

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carmine

a. a vivid red colour, sometimes with a purplish tinge
b. (as adjective): carmine paint

Carmine

 

a red dye extracted from the bodies of wingless female cochineal insects. Carmine, a complex organic carminic acid, is extracted from the insects with hot water and acetic acid. It is soluble in water and alkalies. One gram of carmine is obtained from 150-175 insects. Carmine is used as a food coloring and a cosmetic dye. It is also used to stain microscopic specimens.

References in periodicals archive ?
Histochemical stains on sections of parotidectomy specimen, secretions within cystic space showing positive staining for mucicarmine (Mucicarmine stain x 200).
Caption: Figure 2: Immunohistochemical analysis of the penile mass demonstrates positive staining with an indicator for squamous cell carcinoma, p63 (a), and positive staining with an indicator for adenocarcinoma, mucicarmine (b).
(E) Mucin production by neoplastic cells was confirmed by toluidine blue (not shown) and acid mucicarmine histochemical stains (arrows) (acid mucicarmine stain; X20).
Moreover, YST cell cytoplasm may stain with PAS due to glycogen content but never with mucicarmine since mucicarmine stains acidic sialomucins.
Histochemical stains identified some of the background matrix as mucin, with intense staining for periodic acid-Schiff and focal staining for mucicarmine. Stains for reticulin and amyloid (Congo red stain) and immunohistochemistry for Tamm-Horsfall protein were negative.
1D), progesterone receptor (PR), and inhibin; while the lining epithelial cells were positive for epithelial membrane antigen (EMA), carcinoembryonic antigen (CEA), and mucicarmine. These are typical features for pathologic diagnosis of mucinous cystic neoplasm of the liver (MCN).
It usually stains with colloidal iron, alcian blue, PAS stain and mucicarmine. Immunohistochemistry is a useful adjunct in making correct diagnosis.
The presence of budding yeast like organisms staining with Gomori methenamine silver, results from the mucicarmine stain were consistent with cryptococcal infection (Fig-3 B).
Special stains like mucicarmine and alcian blue, are helpful in identifying mucin that is present freely in tissues or in the foamy macrophages.
Histiocytic/epithelioid cell infiltrates often indicate an infective aetiology, which is further investigated by appropriate histochemical stains [Ziehl Neelsen, periodic acid Schiff (PAS), Grocott (silver) and mucicarmine stains].
Another section was therefore stained with mucicarmine (1, 2) and the diagnosis was revised to C.
Histochemical stains including periodic acid--Schiff (PAS) with and without diastase predigestion and mucicarmine, and immunohistochemical studies using antibodies against broad spectrum keratin (1:50; DAKO Corporation, Carpinteria, CA, USA), epithelial membrane antigen (EMA, 1:80; DAKO MS, Glostrup, Denmark), and carcinoembrionic antigen (CEA, 1:50; Novocastra Laboratories, Newcastle upon Tyne, UK) were also performed.