{
  "resourceType" : "BiologicallyDerivedProduct",
  "id" : "allogeneicHCT",
  "request" : [{
    "reference" : "ServiceRequest/example",
    "display" : "Service Request for HCT Collection"
  }],
  "collection" : {
    "sourcePatient" : {
      "reference" : "Patient/pat2",
      "display" : "HCT Donor"
    }
  }
}