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 (yo͝or′ē-ās′, -āz′)
A nickel-containing enzyme that catalyzes the hydrolysis of urea to ammonia and carbonic acid and is found in certain bacteria, fungi, plants, and marine invertebrates.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈjʊərɪˌeɪs; -ˌeɪz)
(Biochemistry) an enzyme occurring in many plants, esp fungi, that converts urea to ammonium carbonate
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈyʊər iˌeɪs, -ˌeɪz)

an enzyme that changes urea into ammonium carbonate, occurring in bacteria, fungi, etc.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.urease - an enzyme that catalyzes the hydrolysis of urea into carbon dioxide and ammonia; is present in intestinal bacteria
enzyme - any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
For years, the urease tests [Campylobacter-like organism (CLO) test, urea breath test] have been the most commonly applied diagnostic test for Helicobacter pylori (H.
Urease tests," Gastroenterology Clinics of North America, vol.
Comparison of the clinical feasibility of three rapid urease tests in the diagnosis of Helicobacter pylori infection.
Rosenberg, "Prospective comparison of rapid urease tests (PyloriTek, CLO test) for the diagnosis of Helicobacter pylori infection in symptomatic children: A Pediatric Multicenter Study," American Journal of Gastroenterology, vol.
Nevertheles, negative results of catalase and urease tests and disappearance of detectable antibodies against Brucella spp.
Kanagawa and urease tests were performed as described by the U.S.
Those that involve endoscopy are the rapid urease tests, histology, and culture.
Infection status was determined in all patients by using three tests: (a) rapid urease tests (CLO test or PyloriTek[R] test); (b) antral histology with hematoxylin and eosin stain; silver stain was used at the pathologist's discretion; and (c) [[sup.13]C]UBT.
Rapid urease tests provide a quick, specific, and inexpensive method to confirm H pylori infection if endoscopy is performed.