<http://ns.inria.fr/covid19/PMC7125513#title>	<http://purl.org/dc/terms/subject>	"Complement system" .
<http://ns.inria.fr/covid19/PMC7125513#title>	<http://purl.org/dc/terms/subject>	"Blood antigen systems" .
<http://ns.inria.fr/covid19/PMC7125513#title>	<http://purl.org/dc/terms/subject>	"Clusters of differentiation" .
<http://ns.inria.fr/covid19/PMC7125513#title>	<http://purl.org/dc/terms/subject>	"Transfusion medicine" .