The following DataNodes have no identifier: 4
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier
Interactions found that involve Labels: 2
http://classic.wikipathways.org/instance/WP1403_r135325 "Brain" with graphId a43cc
http://classic.wikipathways.org/instance/WP1403_r135325 "Low glucose,
hypoxia, ischemia,
heat shock" with graphId b3982