<http://ns.inria.fr/covid19/PMC3968130#title>	<http://purl.org/dc/terms/subject>	"Optical Transport Network" .
<http://ns.inria.fr/covid19/PMC3968130#title>	<http://purl.org/dc/terms/subject>	"Protein domains" .
<http://ns.inria.fr/covid19/PMC3968130#title>	<http://purl.org/dc/terms/subject>	"Enzymes" .