Assertion: catechin's metabolite | /r/AtLocation | urine
Facets:
Source sentences:
text: Because the stereochemistry of the flavan-3-ols consumed in cocoa as well as the stereochemistry of the flavan-3-ol metabolites observed in plasma and urine have rarely been characterized to the enantiomer level, this uncertainty will be made clear by using, for example, (epi)catechin and (epi)gallocatechin rather than the apparently more-precise terms used in almost all the original publications.