
1) Animal pigment 2) Biological pigment 3) Shade of yellow
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https://www.crosswordclues.com/clue/urobilin

1) Urohematin
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https://www.crosswordclues.com/clue/urobilin

Urobilin or urochrome is a yellow biochemical linear tetrapyrrole compound. Urobilin and its related compound, urobilinogen, are degradation products of the cyclic tetrapyrrole heme, and is primarily responsible for the yellow color of urine. ==Metabolism== Urobilin is generated from the degradation of heme, which is first degraded through biliver...
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http://en.wikipedia.org/wiki/Urobilin

• (n.) A yellow pigment identical with hydrobilirubin, abundant in the highly colored urine of fever, and also present in normal urine. See Urochrome.
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http://thinkexist.com/dictionary/meaning/urobilin/

(from the article `renal system`) ...and in malignant malaria (blackwater fever). Fresh blood may derive from bleeding in the urinary tract. Bile salts and pigments are increased in ...
Found on
http://www.britannica.com/eb/a-z/u/17

(u″ro-bi´lin) a brown pigment formed by oxidation of urobilinogen; found in the feces and sometimes in the urine after standing in the air.
Found on
http://www.encyclo.co.uk/local/21001

Type: Term Pronunciation: yūr′ō-bī′lin Definitions: 1. A uroporphyrin; an acyclic tetrapyrrole that is one of the natural breakdown products of heme via choleglobin, verdohemochrome, biliverdin, bilirubin, and d-urobilinogen; a urinary pigment that gives a varying orange-red coloration to urine according to its degree of ...
Found on
http://www.medilexicon.com/medicaldictionary.php?t=96089

[
n] - brown bile pigment formed from urobilinogens and found in feces and in small amounts in urine
Found on
http://www.webdictionary.co.uk/definition.php?query=urobilin

urobilin A yellow pigment identical with hydrobilirubin (body formed from bilirubin), abundant in the highly colored urine of fever, and also present in normal urine.
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http://www.wordinfo.info/words/index/info/view_unit/297/2
noun brown bile pigment formed from urobilinogens and found in feces and in small amounts in urine
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.