<http://webisa.webdatacommons.org/104108041>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freepatentsonline.com> .
<http://webisa.webdatacommons.org/prov/125208525>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/104108041> .
<http://webisa.webdatacommons.org/104108041>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/104108041>	<http://www.w3.org/ns/prov#value>	"For example, EDTA chelates metal ions such as zinc, calcium and magnesium which may affect proteolytic activity of some enzymes. 4) Mononuclear separations and tissue preparation techniques may activate cellular enzymes, changing acquired results." .