Assertion: urea's use | /r/CapableOf | demonstrate the use of urea
Facets:
value: by young calves
type: OTHER
Source sentences:
text: Use of negative controls and positive responses from urea additions by several authors (Brown et al., 1956; Naylor and Leibholz, 1970; D. K. Nelson, 1970) demonstrates the use of urea by young calves.