immunizes host vaccine immunization for host immunization for host Yongqun He YL a shortcut relation that equals to: 'processed material' and (is_specified_output_of some 'vaccine preparation') and ('has function' some ('vaccine function' and ('is realized by' only ('vaccine immunization' and (realizes some ('vaccine host role' and (role_of some 'organism')))))))). The domain of this relation is a vaccine. The range of this relation is a organism. organism vaccine