{ "items" : [
    { "id" : "http://ns.inria.fr/covid19/PMC7350006#title"
      "properties" : {
        "http://purl.org/dc/terms/subject" : [ "Bacteria used in dairy products",
          "Vaccination",
          "Gram-positive bacteria",
          "Immunology",
          "Probiotics",
          "Bacteria described in 1923",
          "Poultry diseases",
          "Cytokines",
          "Biotechnology",
          "Digestive system",
          "Viral respiratory tract infections",
          "Gammacoronaviruses",
          "Animal virology",
          "Interleukins",
          "Lactobacillaceae"] } } }
