Assertion: vitamin d's form | /r/CapableOf | enter the circulation
Facets:
Source sentences:
text: After vitamin D is consumed through the diet (D3 and D2) or synthesized in the skin (D3), both biologically inactive forms (D3 and D2) enter the circulation and are transported to the liver, where they get hydroxylated to form the 25-hydroxyvitamin D [25(OH)D] pool, which is the vitamin D status indicator.