_:b57231004	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/53265940ead4d3a3a44537e0dfbd747d4e42fa3f/2> .
_:b57231004	<http://www.w3.org/ns/oa#hasSelector>	_:b57231005 .
_:b57231005	<http://www.w3.org/ns/oa#exact>	"polymeric Ig receptor" .
_:b57231005	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .