<http://ns.inria.fr/covid19/PMC7120406#title>	<http://purl.org/dc/terms/subject>	"Complement system" .
<http://ns.inria.fr/covid19/PMC7120406#title>	<http://purl.org/dc/terms/subject>	"EC 3.4.21" .
<http://ns.inria.fr/covid19/PMC7120406#title>	<http://purl.org/dc/terms/subject>	"Immune system" .
<http://ns.inria.fr/covid19/PMC7120406#title>	<http://purl.org/dc/terms/subject>	"Peptidase" .