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http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	by Robert H. Wells (Medical Xpress) -- Zinc is an essential nutrient, but until now, there has not been an effective way to measure it in our bodies, say University of Florida researchers.
http://www.w3.org/ns/prov#wasQuotedFrom	medicalxpress.com