Assertion: vitamin b12 | /r/CapableOf | play essential role
Facets:
value: in dna synthesis
type: OTHER
value: in the production of the dna
type: PURPOSE
Source sentences:
text: Vitamin B12 plays an essential role in the production of the DNA needed to make red blood cells.
text: Vitamin B12 is important for maintaining healthy blood cells and nerves, and it plays an essential role in DNA synthesis (9).