{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "Modified Hank's balanced salt solution supplemented with bovine serum albumin, gelatin, sucrose and glutamic acid. It is buffered to pH 7.3+ or - 0.2 with Hepes buffer. Phenol red is used to indicate pH. Gentamicin and amphotericin B are used to inhibit c",
  "system" : "http://terminology.hl7.org/CodeSystem/v3-EntityCode",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "_SpecimenAdditiveEntity"
  } ],
  "codesystem" : "0b0e33f8-1064-56b9-9511-23ed0a9dfac8",
  "concept_id" : "6f744854-9b3e-5fae-8233-71d25550945d",
  "ancestors" : {
    "M4RT" : 0,
    "_SpecimenAdditiveEntity" : 1,
    "_MaterialEntityClassType" : 2
  },
  "id" : "11f67f64-f0bb-4121-bbd2-1483e2b5463f",
  "code" : "M4RT",
  "display" : "M4-RT",
  "version" : "2018-08-12"
}