{ "items" : [
    { "id" : "http://ns.inria.fr/covid19/PMC7100037#title"
      "properties" : {
        "http://purl.org/dc/terms/subject" : [ "Cell signaling",
          "Cell biology",
          "Membrane biology",
          "Zinc proteins",
          "Receptors",
          "EC 3.4",
          "Branches of immunology"] } } }
