Search results
Results from the WOW.Com Content Network
Haematin (also known as hematin, ferriheme, hematosin, hydroxyhemin, oxyheme, phenodin, or oxyhemochromogen) is a dark bluish or brownish pigment containing iron in the ferric state, obtained by the oxidation of haem. [1] Haematin inhibits the synthesis of porphyrin (by repressing ALAS1 synthesis), [2] and stimulates the synthesis of globin.
In acidic solutions, complexes of hematein with metals (usually aluminium or iron, but also chromium, zirconium and several others) are used as biological stains. Aluminium-haematein (haemalum) is the "routine" stain for cell nuclei in sections of human and other animal tissues.
Hemin is protoporphyrin IX containing a ferric iron (Fe 3+) ion with a coordinating chloride ligand.. Chemically, hemin differs from the related heme-compound hematin chiefly in that the coordinating ion is a chloride ion in hemin, whereas the coordinating ion is a hydroxide ion in hematin. [2]
Pages for logged out editors learn more. Contributions; Talk; Hematin
Esophagitis, esophageal varices, gastritis, cirrhosis or gastric ulcers for example, may bleed and produce coffee-ground vomitus. When unaccompanied by melena, hematemesis or a fall in hemoglobin with corresponding urea rises and creates an unstable reaction, and other causes of coffee ground vomitus need to be elucidated; for example, gastric stasis, bowel obstruction or ileus, that can cause ...
Haematoxylin or hematoxylin (/ ˌ h iː m ə ˈ t ɒ k s ɪ l ɪ n /), also called natural black 1 or C.I. 75290, is a compound extracted from heartwood of the logwood tree (Haematoxylum campechianum) [1] [2] with a chemical formula of C
Black-brown pigment was observed by Johann Heinrich Meckel [1] in 1847, in the blood and spleen of a person suffering from insanity. [2] However, it was not until 1849 that the presence of this pigment was connected to infection with malaria. [3]
Cerebrospinal fluid specimen stained with Perls Prussian blue showing iron containing macrophage (stained blue) surrounded by erythrocytes (stained red). In histology, histopathology, and clinical pathology, Perls Prussian blue is a commonly used method to detect the presence of iron in tissue or cell samples.