xanthine alkaloids
Alkaloids, which contain xanthine as their nitrogenous base.
xanthine bronchodilator
<pharmacology> A group of medications that work by a common mechanism to effect bronchodilation (open up air passa (more...)
xanthine dehydrogenase
<enzyme> An enzyme that catalyses the oxidation of xanthine in the presence of NAD+ to form urate and NADH. It act (more...)
xanthine oxidase
<enzyme> Dehydrogenases involved in conversion of hypoxanthine to xanthine and xanthine to uric acid, as the final (more...)
xanthosine
9-beta-d-ribosylxanthine;the deamination product of guanosine (O replacing -NH2).
xanthinine
<chemistry> A complex nitrogenous substance related to urea and uric acid, produced as a white powder; so called b (more...)
xanthinol niacinate
<chemical> 3-pyridinecarboxylic acid compound with 3,7-dihydro-7- (2-hydroxy-3-((2-hydroxyethyl)methylamino)propyl (more...)
xanthinuria
1. Excretion of abnormally large amounts of xanthine in the urine.
xanthism
A pigmentary anomaly of blacks, characterised by red or yellow-red hair colour, copper-red skin, and often by dilution o (more...)
xanthium
<botany> A genus of composite plants in which the scales of the involucre are united so as to form a kind of bur; (more...)
