_:b57647888	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/34a0bd91b8e0208d8f9007bad057334cd96ae541/0> .
_:b57647888	<http://www.w3.org/ns/oa#hasSelector>	_:b57647889 .
_:b57647889	<http://www.w3.org/ns/oa#exact>	"IgA antibody" .
_:b57647889	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .