The inhibition was reversed by hypoxanthine, adenine, guanine, and xanthine (28).    From Wordnik.com.  [Nobel Lecture The Purine Path To Chemotherapy] Reference

It could grow on adenine, guanine, hypoxanthine or xanthine, provided the pyrimidine thymine was added.    From Wordnik.com.  [Nobel Lecture The Purine Path To Chemotherapy] Reference

The fate of the intermediate oxypurines, hypoxanthine and xanthine, turned out to be a fascinating one.    From Wordnik.com.  [Nobel Lecture The Purine Path To Chemotherapy] Reference

The artificial preparation of theobromine and caffeine from xanthine, and guanine also show clearly their relations.    From Wordnik.com.  [Scientific American Supplement, No. 415, December 15, 1883] Reference

Thus, the salvage of hypoxanthine and xanthine serves to regulate purine biosynthesis, reducing it when it is excessive.    From Wordnik.com.  [Nobel Lecture The Purine Path To Chemotherapy] Reference

It was recognized at the outset that the inhibition of an enzyme like xanthine oxidase in vivo might present some difficulties.    From Wordnik.com.  [Nobel Lecture The Purine Path To Chemotherapy] Reference

In the early days of seeking antimetabolites for the natural purines in our laboratory, xanthine oxidase had been one of test enzymes.    From Wordnik.com.  [Nobel Lecture The Purine Path To Chemotherapy] Reference

The enzymes guanase and xanthine oxidase were useful in our laboratory to examine the purines as substrates or inhibitors of these enzymes.    From Wordnik.com.  [Nobel Lecture The Purine Path To Chemotherapy] Reference

Carbon isotope ratios for uracil and xanthine of δ13C = + 44.5‰ and + 37.7‰, respectively, indicate a non-terrestrial origin for these compounds.    From Wordnik.com.  [How Life Came to Earth] Reference

To test for xanthine oxidase inhibition in vivo, we chose a compound that had no inhibitory effects on bacteria or tumors, was non-toxic, but which was.    From Wordnik.com.  [Nobel Lecture The Purine Path To Chemotherapy] Reference

These dihydroflavonols inhibited superoxide anion production in the xanthine/xanthine oxidase system.    From Wordnik.com.  [Wil's Ebay E-Store] Reference

RDEA594 is in Phase 2 development as a single agent and in combination with the approved xanthine oxidase inhibitor, allopurinol.    From Wordnik.com.  [Ardea Biosciences Announces Positive Results for RDEA594 in Combination with Febuxostat or Allopurinol in Gout Patients - Yahoo! Finance] Reference

Cocoa bean shells contain potentially toxic quantities of theobromine, a xanthine compound similar in effects to caffeine and theophylline.    From Wordnik.com.  [Here There and Everywhere] Reference

Allegedly, these two bits of coding, uracil and xanthine, are present in our DNA, and would have been necessary for life to form here on Earth.    From Wordnik.com.  [ReadABlog.com New Blogs and RSS Feeds] Reference

Although the underlying mechanism for ROS amplification is not clear, these peptides seem to exert catalytic effect on NADPH oxidases, xanthine oxidase and cytochrome c.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Well, Starbucks, one of the nation's largest purveyors of the white crystalline xanthine alkaloid known as "The White Horse," "Columbian Bean," or just by its more informal name.    From Wordnik.com.  [Starbucks Cafes That Don't Look Like Starbucks Cafes To Sell Beer, Wine, Bourgeois Bliss | The Daily Feed | Minyanville.com] Reference

2-hydroxyisobutyrate and xanthine contributed most to the classification model and were responsible for the discrimination.    From Wordnik.com.  [Naturejobs - All Jobs] Reference

2. − and therefore only occurs when specific generating enzymes or systems, e.g. NADP (H) - oxidases, xanthine oxidase, mitochondrial complexes I and III or iNOS, are activated.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

A potent inhibitor of xanthine oxidase.    From Wordnik.com.  [Nobel Lecture The Purine Path To Chemotherapy] Reference

3-isobutyl-1-methyl-xanthine, 1 µM dexamethasone, 5 mg/ml insulin, and 50 mM indomethacin.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Lactoferrin, xanthine oxidase, lactoperoxidase, lysozyme and nisin are enzymes present in raw milk that kill pathogens. http: / / www. realmilk.com / safety-raw-milk. html.    From Wordnik.com.  [xml's Blinklist.com] Reference