_:b57301288	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/55e78cefc181c93a15ef8144712a4a3539e9727c/4> .
_:b57301288	<http://www.w3.org/ns/oa#hasSelector>	_:b57301289 .
_:b57301289	<http://www.w3.org/ns/oa#exact>	"regulatory T cells" .
_:b57301289	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .