The following DataNodes have no identifier: 1
http://classic.wikipathways.org/instance/WP5431_r129005 http://rdf.wikipathways.org/Pathway/WP5431_r129005/DataNode/edc65 (Chemotaxis to Mucosal &/or Inflammed Tissues)
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier