The following DataNodes have no identifier: 5
http://classic.wikipathways.org/instance/WP3222_r116443 http://rdf.wikipathways.org/Pathway/WP3222_r116443/DataNode/a6d1b (Contraction (myometrial cell,
mammary gland myoepithelial cell))
http://classic.wikipathways.org/instance/WP3222_r116443 http://rdf.wikipathways.org/Pathway/WP3222_r116443/DataNode/a5aa1 (MAPK signalling pathway)
http://classic.wikipathways.org/instance/WP3222_r116443 http://rdf.wikipathways.org/Pathway/WP3222_r116443/DataNode/c2500 (Oxytocin release
(OXT neurons))
http://classic.wikipathways.org/instance/WP3222_r116443 http://rdf.wikipathways.org/Pathway/WP3222_r116443/DataNode/d3ba0 (PKC
isozyme family)
http://classic.wikipathways.org/instance/WP3222_r116443 http://rdf.wikipathways.org/Pathway/WP3222_r116443/DataNode/f0312 (Protein synthesis)
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier