{ "items" : [
    { "id" : "http://ns.inria.fr/covid19/PMC7408680#title"
      "properties" : {
        "http://purl.org/dc/terms/subject" : [ "Cell death",
          "Virology",
          "Immunology",
          "1898 in biology",
          "Lung",
          "Human anatomy by organ",
          "Viruses",
          "Cellular processes",
          "Programmed cell death",
          "Human cell lines"] } } }
