<SubstanceDefinition xmlns="http://hl7.org/fhir"><id value="dermatophagoides-farinae"/><identifier><system value="http://example.europa.eu/fhir/SMSId"/><value value="DERMFAR1S"/></identifier><status><coding><system value="http://hl7.org/fhir/publication-status"/><code value="active"/><display value="Active"/></coding></status><classification><coding><system value="http://example.europa.eu/fhir/SubstanceType"/><code value="structurally-diverse"/><display value="Structurally Diverse"/></coding></classification><domain><coding><system value="http://example.europa.eu/fhir/Domain"/><code value="human"/><display value="Human use"/></coding></domain><description value="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 value="http://example.europa.eu/fhir/Substance"/><code value="DERMFAR1S"/></coding></code></code><name><name value="Dermatophagoides farinae"/><preferred value="true"/><language><coding><system value="urn:ietf:bcp:47"/><code value="en"/><display value="English"/></coding></language><official><authority><coding><system value="http://hl7.org/fhir/substance-name-authority"/><code value="USAN"/><display value="USAN"/></coding></authority><status><coding><system value="http://hl7.org/fhir/publication-status"/><code value="active"/><display value="Active"/></coding></status></official></name><name><name value="American house dust mite"/><preferred value="false"/></name><sourceMaterial><type><coding><system value="http://hl7.org/fhir/substance-source-material-type"/><code value="Animal"/><display value="Animal"/></coding></type><genus><coding><system value="http://example.europa.eu/fhir/Genus"/><code value="Dermatophagoides"/><display value="Dermatophagoides"/></coding></genus><species><coding><system value="http://example.europa.eu/fhir/Species"/><code value="farinae"/><display value="D. farinae"/></coding></species><part><coding><system value="http://example.europa.eu/fhir/Part"/><code value="whole-organism"/><display value="Whole organism"/></coding></part></sourceMaterial></SubstanceDefinition>