realizes has_participant has participant has participant role of has role has_role has role medical intervention material to be added role target of material addition role organism administering substance in vivo vaccine vaccination a process of administering substance in vivo that involves in adding a vaccine into a host (e.g., human) in vivo with the intent to invoke a protective or therapeutic adaptive immune response. YH, BP a medical intervention that involves in adding vaccine into a host (e.g., human, mouse) in vivo with the intent to invoke an adaptive immune response. vaccine administration vaccine host role