Structurally diverse substance: Dermatophagoides farinae allergen — house dust mite extract

{
  "resourceType" : "SubstanceDefinition",
  "id" : "dermatophagoides-farinae",
  "identifier" : [{
    "system" : "http://example.europa.eu/fhir/SMSId",
    "value" : "DERMFAR1S"
  }],
  "status" : {
    "coding" : [{
      "system" : "http://hl7.org/fhir/publication-status",
      "code" : "active",
      "display" : "Active"
    }]
  },
  "classification" : [{
    "coding" : [{
      "system" : "http://example.europa.eu/fhir/SubstanceType",
      "code" : "structurally-diverse",
      "display" : "Structurally Diverse"
    }]
  }],
  "domain" : {
    "coding" : [{
      "system" : "http://example.europa.eu/fhir/Domain",
      "code" : "human",
      "display" : "Human use"
    }]
  },
  "description" : "Dermatophagoides farinae — American house dust mite allergen extract. A structurally diverse substance defined by its source organism rather than a discrete chemical structure, used in allergen immunotherapy products.",
  "code" : [{
    "code" : {
      "coding" : [{
        "system" : "http://example.europa.eu/fhir/Substance",
        "code" : "DERMFAR1S"
      }]
    }
  }],
  "name" : [{
    "name" : "Dermatophagoides farinae",
    "preferred" : true,
    "language" : [{
      "coding" : [{
        "system" : "urn:ietf:bcp:47",
        "code" : "en",
        "display" : "English"
      }]
    }],
    "official" : [{
      "authority" : {
        "coding" : [{
          "system" : "http://hl7.org/fhir/substance-name-authority",
          "code" : "USAN",
          "display" : "USAN"
        }]
      },
      "status" : {
        "coding" : [{
          "system" : "http://hl7.org/fhir/publication-status",
          "code" : "active",
          "display" : "Active"
        }]
      }
    }]
  },
  {
    "name" : "American house dust mite",
    "preferred" : false
  }],
  "sourceMaterial" : {
    "type" : {
      "coding" : [{
        "system" : "http://hl7.org/fhir/substance-source-material-type",
        "code" : "Animal",
        "display" : "Animal"
      }]
    },
    "genus" : {
      "coding" : [{
        "system" : "http://example.europa.eu/fhir/Genus",
        "code" : "Dermatophagoides",
        "display" : "Dermatophagoides"
      }]
    },
    "species" : {
      "coding" : [{
        "system" : "http://example.europa.eu/fhir/Species",
        "code" : "farinae",
        "display" : "D. farinae"
      }]
    },
    "part" : {
      "coding" : [{
        "system" : "http://example.europa.eu/fhir/Part",
        "code" : "whole-organism",
        "display" : "Whole organism"
      }]
    }
  }
}