_:b57053060	<http://www.w3.org/ns/oa#hasSelector>	_:b57053061 .
_:b57053061	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57053061	<http://www.w3.org/ns/oa#exact>	"IgA" .
_:b57053060	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/afa5cab2abb47553a3f1e904c7706dba6022bd2f/1> .