Fig. 2
From: Ontology-based literature mining of E. coli vaccine-associated gene interaction networks
VO hierarchical structure and axioms of E. coli vaccines. a Vaccine hierarchy that shows the E. coli vaccines. b Axioms of the E. coli vaccine ‘E. coli FimH with CFA and then IFA’ (VO_0001168). The circled term ‘FimH’ is the E. coli protein FimH. These are screenshots with the Protégé OWL editor