Assertion: vitamin b12 | /r/HasProperty | needed for red blood cell production
Facets:
Source sentences:
text: Vitamin B12, or cobalamin, is an essential water-soluble vitamin needed for red blood cell production, DNA synthesis and a healthy nervous system.
text: Vitamin B12, or cobalamin, is an essential water-soluble vitamin needed for red blood cell production, DNA synthesis and a healthy nervous system.