<http://ns.inria.fr/covid19/PMC7117139#body_text>	<http://purl.org/dc/terms/subject>	"Independent cities in the United States" .
<http://ns.inria.fr/covid19/PMC7117139#body_text>	<http://purl.org/dc/terms/subject>	"Apoptosis" .
<http://ns.inria.fr/covid19/PMC7117139#body_text>	<http://purl.org/dc/terms/subject>	"Programmed cell death" .
<http://ns.inria.fr/covid19/PMC7117139#body_text>	<http://purl.org/dc/terms/subject>	"Pleistocene" .
<http://ns.inria.fr/covid19/PMC7117139#body_text>	<http://purl.org/dc/terms/subject>	"Smallpox vaccines" .