_:b57112096	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/c513fb0abb1aa50c3323e4f6d311248701f0280b/1> .
_:b57112097	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57112096	<http://www.w3.org/ns/oa#hasSelector>	_:b57112097 .
_:b57112097	<http://www.w3.org/ns/oa#exact>	"germinal center B cell" .