The "Molecule_EntityType" concept is defined by the "MoleculeType", "GeneType" and "ConfigurationType" concepts of identification and has properties identified in the "Functionality" and "StructureType" concepts (IDENTIFICATION axiom). Arrows indicate reciprocal relations "is_defined_by" and "defines", "_has_" and "_for_". Concept instances which are general are in blue, those which are specific of the IG and TR are in red. The "Molecule_EntityType" concept has 19 instances (listed in section 3.1.2.4). Only a few examples of the "StructureType" concept instances are shown.