immunosurveillance
noun
im·mu·no·sur·veil·lance
| \ -sər-ˈvā-lən(t)s also -ˈvāl-yən(t)s or -ˈvā-ən(t)s\
Medical Definition of immunosurveillance
: a monitoring process of the immune system which detects and destroys neoplastic cells and which tends to break down in immunosuppressed individuals
— called also immunological surveillance