Assertion: choline | /r/CapableOf | serve as a source of methyl groups
Facets:
Source sentences:
text: Choline also serves as a source of methyl groups (―CH 3 groups) that are required in various metabolic processes.
text: Choline serves as a source of the methyl groups (―CH 3 groups), which are required in various metabolic processes, and it functions in the transport of fats from the liver.