The following DataNodes have no identifier: 12
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/f2e4b (Big ET1)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/c6ea1 (Ca2+ channel)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/dede3 (Ca2+ channel)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/e7508 (Ca2+ channel)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/c5e16 (EDHF)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/aa3af (Furin-like protease)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/c59a7 (IP3R)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/d3117 (IP3R)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/cfff8 (K+ channel)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/c2438 (PMCA)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/b9f53 (Pre-pro ET1)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/DataNode/fd30a (Pre-pro ET1)
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier
Interactions between identical nodes: 5
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/WP/Interaction/idc1b3c0dd "NO" (https://identifiers.org/hmdb/HMDB0003378) and
NO" (https://identifiers.org/hmdb/HMDB0003378)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/WP/Interaction/idb3aa2f38 "Endothelin 1" (https://identifiers.org/ensembl/ENSG00000078401) and
Endothelin 1" (https://identifiers.org/ensembl/ENSG00000078401)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/WP/Interaction/idf1eab143 "NO" (https://identifiers.org/hmdb/HMDB0003378) and
NO" (https://identifiers.org/hmdb/HMDB0003378)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/WP/Interaction/id7462d22 "PGI2" (https://identifiers.org/wikidata/Q412050) and
PGI2" (https://identifiers.org/wikidata/Q412050)
http://classic.wikipathways.org/instance/WP2197_r117710 http://rdf.wikipathways.org/Pathway/WP2197_r117710/WP/Interaction/id5da5c6b1 "NO" (https://identifiers.org/hmdb/HMDB0003378) and
NO" (https://identifiers.org/hmdb/HMDB0003378)
More details at https://www.wikipathways.org/WikiPathwaysCurator/InteractionTests/possibleTranslocations
Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP2197_r117710](http://classic.wikipathways.org/instance/WP2197_r117710) 'Endothelin pathways' in Homo sapiens has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference