Xanthopsydracia
An eruption of small yellow pustules.

Xanthopterin
<chemical> 2-amino-1,5-dihydro-4,6-pteridinedione. Pigment first discovered in butterfly wings and widely distribu (more...)

Xanthopuccine
<chemistry> One of three alkaloids found in the root of the yellow puccoon (Hydrastis Canadensis). It is a yellow (more...)

Xanthorhamnin
<chemistry> A glucoside extracted from Persian berries as a yellow crystalline powder, used as a dyestuff.

Xanthorhiza
<botany> A genus of shrubby ranunculaceous plants of North America, including only the species Xanthorhiza apiifol (more...)

Xanthorhoea
<botany> A genus of endogenous plants, native to Australia, having a thick, sometimes arborescent, stem, and long (more...)

Xanthose
<chemistry> An orange-yellow substance found in pigment spots of certain crabs.

Xanthosine 5'-triphosphate
Xanthosine with a triphosphoric acid esterified at its 5' position.

Xanthosine Phosphorylase
<enzyme> From E coli k-12; mw 18kda; inactivated by p-chloromercuriphenylsulfonic acid

Xanthosis
<medicine> The yellow discolouration often observed in cancerous tumours.