_:b57470456	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/420cafb483c5e977fa1bc6ec807f52d399b527af/0> .
_:b57470456	<http://www.w3.org/ns/oa#hasSelector>	_:b57470457 .
_:b57470457	<http://www.w3.org/ns/oa#exact>	"IgM" .
_:b57470457	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .