The following DataNodes have no identifier: 2
http://classic.wikipathways.org/instance/WP4210_r123510 http://rdf.wikipathways.org/Pathway/WP4210_r123510/DataNode/ac0ba (NAD+-consuming
enzymes)
http://classic.wikipathways.org/instance/WP4210_r123510 http://rdf.wikipathways.org/Pathway/WP4210_r123510/DataNode/c8c6e (protein
synthesis)
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier