hemochromogen

also spelled  Haemochromogen, 

      compound of the iron-containing pigment heme with a protein or other substance. The hemochromogens include hemoglobin, found in red blood cells, and the cytochromes, which are widely distributed compounds important to oxidation processes in animals and plants.

      More specifically, hemochromogen may refer to a derivative of hemoglobin in which heme is combined with a globin modified by the action of a strong alkali. This compound is useful in determining whether a stain is blood because it can be formed from an old blood stain and because, of all blood pigments, it can be identified in the greatest dilution.

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Universalium. 2010.

Look at other dictionaries:

  • hemochromogen — Term originally used for combinations of ferro or ferriporphyrins with 2 mol of a nitrogenous base or protein, e.g., pyridine ferroporphyrin. SYN: hemochrome. [hemo + G. chroma, color, + gen, producing] * * * he·mo·chro·mo·gen or chiefly Brit… …   Medical dictionary

  • hemochromogen — he·mo·chro·mo·gen …   English syllables

  • hemochromogen — ˌ ̷ ̷ ̷ ̷ˈkrōməˌjen, jə̇n noun ( s) Etymology: International Scientific Vocabulary hemochromo (from hemochrome) + gen 1. : a colored compound formed from or related to hemoglobin; …   Useful english dictionary

  • hemochrome — SYN: hemochromogen. * * * he·mo·chrome (heґmo krōm) [hemo + chrome] a heme compound in which the fifth and sixth coordination positions of the central iron atom are occupied by strong field ligands, usually nitrogen atoms, as in cytochromes; …   Medical dictionary

  • auto-oxidizable — Denoting substances that react directly with oxygen ( e.g., b hemochromogen in cytochrome) and do not require the action of dehydrogenases. * * * auto ox·i·di·za·ble (aw″to ok″sĭ diґzə bəl) capable of spontaneous… …   Medical dictionary

  • cathemoglobin — An artificial derivative of hemoglobin in which the globin is denatured and the iron oxidized. * * * ca·the·mo·glo·bin (kə the mo gloґbin) a substance produced by oxidizing hemochromogen; it consists of oxidized heme and denatured globin …   Medical dictionary

  • stain — 1. To discolor. 2. To color; to dye. 3. A discoloration. 4. A dye used in histologic and bacteriologic technique. 5. A procedure in which a dye or combination of dyes and reagents is used to color the constituents of cells and tissues. For… …   Medical dictionary

  • hack — hak vi to cough in a short dry manner hack n a short dry cough Each boldface word in the list below is a chiefly British variant of the word to its right in small capitals. haem HEME haemacytometer HEMACYTOMETER haemadsorbing HEMADSORBING… …   Medical dictionary

  • Schumm test — (for heme in plasma) a given volume of plasma is covered with a layer of ether; one tenth the volume of concentrated ammonium sulfide (analar) is then run in with a pipette and subsequently mixed by shaking. A positive reaction is indicated by… …   Medical dictionary

  • Takayama test —    Also called hemochromogen crystals. Used for the identification of blood …   Forensic science glossary

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