{ "items" : [
    { "id" : "http://ns.inria.fr/covid19/PMC7097781#title"
      "properties" : {
        "http://purl.org/dc/terms/subject" : [ "Signal transduction",
          "Cell biology",
          "Posttranslational modification",
          "Protein domains",
          "Molecular biology",
          "Proteins",
          "Proteomics"] } } }
