The following DataNodes have no identifier: 9
http://classic.wikipathways.org/instance/WP2207_r117414 http://rdf.wikipathways.org/Pathway/WP2207_r117414/DataNode/b845d (Spermidine biosynthesis)
http://classic.wikipathways.org/instance/WP2207_r117414 http://rdf.wikipathways.org/Pathway/WP2207_r117414/DataNode/e5fdd (Spermine biosynthesis)
http://classic.wikipathways.org/instance/WP2207_r117414 http://rdf.wikipathways.org/Pathway/WP2207_r117414/DataNode/b1107 (Spontaneous)
http://classic.wikipathways.org/instance/WP2207_r117414 http://rdf.wikipathways.org/Pathway/WP2207_r117414/DataNode/d74ad (Spontaneous)
http://classic.wikipathways.org/instance/WP2207_r117414 http://rdf.wikipathways.org/Pathway/WP2207_r117414/DataNode/f3208 (Spontaneous)
http://classic.wikipathways.org/instance/WP2207_r117414 http://rdf.wikipathways.org/Pathway/WP2207_r117414/DataNode/a7491 (oxidized electron acceptor)
http://classic.wikipathways.org/instance/WP2207_r117414 http://rdf.wikipathways.org/Pathway/WP2207_r117414/DataNode/acea2 (pantothenate biosynthesis II)
http://classic.wikipathways.org/instance/WP2207_r117414 http://rdf.wikipathways.org/Pathway/WP2207_r117414/DataNode/b2a30 (pantothenate biosynthesis III)
http://classic.wikipathways.org/instance/WP2207_r117414 http://rdf.wikipathways.org/Pathway/WP2207_r117414/DataNode/ce6bd (reduced electron acceptor)
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier
Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP2207_r117414](http://classic.wikipathways.org/instance/WP2207_r117414) 'Beta-alanine biosynthesis' in Oryza sativa has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference