{
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  "definition" : null,
  "system" : "http://hl7.org/fhir/animal-tissue-type",
  "property" : [ ],
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  "concept_id" : "0be77d74-0733-57e0-ba8a-f5e3bf869a17",
  "ancestors" : {
    "100000111104" : 0
  },
  "id" : "6d973257-2f27-4451-8927-a112bd9908b6",
  "code" : "100000111104",
  "display" : "Optic nerve",
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}