GET ContentService/data/participants/{id}/referenceEntities

PhysicalEntity instances that represent, e.g., the same chemical in different compartments, or different post-translationally modified forms of a single protein, share numerous invariant features such as names, molecular structure and links to external databases like UniProt or ChEBI.<br>To enable storage of this shared information in a single place, and to create an explicit link among all the variant forms of what can also be seen as a single chemical entity, Reactome creates instances of the separate ReferenceEntity class. A ReferenceEntity instance captures the invariant features of a molecule.<br>This method retrieves the ReferenceEntities of all PhysicalEntities that take part in a given event. It is worth mentioning that because a pathway can contain smaller pathways (subpathways), this method also recursively retrieves the ReferenceEntities for all PhysicalEntities in every constituent pathway.