<http://ns.inria.fr/covid19/PMC5561217#title>	<http://purl.org/dc/terms/subject>	"Defensive cells" .
<http://ns.inria.fr/covid19/PMC5561217#title>	<http://purl.org/dc/terms/subject>	"Vaccinia" .
<http://ns.inria.fr/covid19/PMC5561217#title>	<http://purl.org/dc/terms/subject>	"Vaccines" .
<http://ns.inria.fr/covid19/PMC5561217#title>	<http://purl.org/dc/terms/subject>	"Genetically modified organisms" .
<http://ns.inria.fr/covid19/PMC5561217#title>	<http://purl.org/dc/terms/subject>	"Antigen presenting cells" .