<http://webisa.webdatacommons.org/319630418>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nih.gov> .
<http://webisa.webdatacommons.org/319630418>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/319630418>	<http://www.w3.org/ns/prov#value>	"1990s Advances in the technology of pregnancy tests included the development of new types of antibodies and the use of enzyme labels in place of radioactive labels." .
<http://webisa.webdatacommons.org/prov/83328196>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/319630418> .