<http://webisa.webdatacommons.org/260359799>	<http://www.w3.org/ns/prov#value>	"FIG. 20A is an embodiment of a unidirectional valve that can be made on a microfluidic chip;" .
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<http://webisa.webdatacommons.org/260359799>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .