Immunoscore® is a tissue-based immune test that measures the host's immune response at the site of the tumor. It is performed on formalin-fixed paraffin-embedded (FFPE) tumor tissue samples from resections of localized colon cancer. The test uses whole slide imaging and artificial intelligence algorithms for assessment of the type, density, and location of T cells in FFPE tumor sections to determine an individual Immunoscore® for each patient.