| id | String | No description |
| meta | Meta | No description |
| implicitRules | uri | No description |
| _implicitRules | ElementBase | No description |
| language | code | No description |
| _language | ElementBase | No description |
| text | Narrative | No description |
| contained | [Resource] | No description |
| extension | [Extension] | No description |
| modifierExtension | [Extension] | No description |
| comment | String | No description |
| _comment | ElementBase | No description |
| gene | [SubstanceReferenceInformationGene] | No description |
| geneElement | [SubstanceReferenceInformationGeneElement] | No description |
| classification | [SubstanceReferenceInformationClassification] | No description |
| target | [SubstanceReferenceInformationTarget] | No description |