part_of biological_process biological_process pathogen pathogen host host-pathogen interaction It is a oboselete term in GO, but we still need this term with regard to the domain of infectious disease. The term should belong to the IDO, or any other specific ontologies desrcibe the host and pathogen interactions. We temporarily put this term here. YL ‘a process that a pthogen and its host have effects upon each other while the pathogen’s establishing the infection in the host and the host’s responses in order to fight the infection’. host cell