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urea c-13

Known as: [13C] urea, Carbon 13 urea, 13C-urea 
A radiolabelled urea molecule used to diagnose stomach ulcers caused by Heliobacter pylori. In the presence of H. pylori, urea C-13 is metabolized by… 
National Institutes of Health

Papers overview

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Highly Cited
2004
Highly Cited
2004
Design, synthesis, and biological evaluation of new 8-heterocyclic xanthine derivatives as highly potent and selective human A2B adenosine receptor antagonists.
Here we report the synthesis of 8-heterocycle-substituted xanthines as potent and selective A(2B) adenosine receptor antagonists… 
Highly Cited
2004
Highly Cited
2004
Cross-inhibition of SR-BI- and ABCA1-mediated cholesterol transport by the small molecules BLT-4 and glyburide Published, JLR Papers in Press, April 21, 2004. DOI 10.1194/jlr.M300358-JLR200
Scavenger receptor class B type I (SR-BI) and ABCA1 are structurally dissimilar cell surface proteins that play key roles in HDL… 
Highly Cited
1998
Highly Cited
1998
The 13C-urea breath test as a predictor of intragastric bacterial load and severity of Helicobacter pylori gastritis.
BACKGROUND The urea breath test (UBT) has been proposed as the most accurate test for diagnosing Helicobacter pylori infection… 
Highly Cited
1996
Highly Cited
1996
Effects of dietary concentrate level on nutrient absorption, liver metabolism, and urea kinetics of beef steers fed isonitrogenous and isoenergetic diets.
Six multicatheterized beef steers (421 +/- 21 kg BW) were used to predict the effect of dietary concentrate level on blood flow… 
Highly Cited
1995
Highly Cited
1995
In vivo inhibition of oestrone sulphatase and dehydroepiandrosterone sulphatase by oestrone‐3‐O‐sulphamate
Many tumours in endocrine‐sensitive tissues, such as the breast and endometrium, are hormone‐dependent and the hydrolysis of… 
Highly Cited
1993
Highly Cited
1993
Minimum analysis requirements for the detection of Helicobacter pylori infection by the 13C-urea breath test.
BACKGROUND In an attempt to identify the minimum criteria for scoring the 13C-urea breath test, we examined test results from 96… 
Highly Cited
1992
Highly Cited
1992
Sodium bicarbonate and yeast culture effects on ruminal fermentation, growth, and intake in dairy calves.
Sodium bicarbonate and yeast culture effects on ruminal fermentation, intake, and growth were evaluated in young calves. In trail… 
Highly Cited
1982
Highly Cited
1982
Evidence that DNA polymerases alpha and beta participate differentially in DNA repair synthesis induced by different agents.
Highly Cited
1980
Highly Cited
1980
The major fibrinolytic proteases of human leukocytes.
Highly Cited
1963
Highly Cited
1963
The biosynthesis of long-chain fatty acids by lettuce chloroplast preparations.
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