Fig. 1From: CIDO ontology updates and secondary analysis of host responses to COVID-19 infection based on ImmPort reports and literatureStrategy of CIDO updating using recursive XOD strategy. The recursive XOD strategy applies the use of the different principles of XOD design for use of new term generation along with creation of new axioms. Further knowledge either from literature or secondary analysis is used as a basis to generate new termsBack to article page