_:b57000776	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/2369adf9ae01de1ff19ee2b39c7e253e484d1459/4> .
_:b57000776	<http://www.w3.org/ns/oa#hasSelector>	_:b57000777 .
_:b57000777	<http://www.w3.org/ns/oa#exact>	"regulatory T cells" .
_:b57000777	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .