Assertion: boron's role | /r/HasProperty | understood
Facets:
value: poorly
type: DEGREE
Source sentences:
text: It is thought that boron plays several essential roles in animals, including humans, but the exact physiological role is poorly understood.
text: As an ultra-trace element, boron is necessary for the optimal health of rats and presumably other mammals, though its physiological role in animals is poorly understood.
text: As an ultra-trace element, boron is necessary for the optimal health of rats and presumably other mammals, though its physiological role in animals is poorly understood.