FAP and neoplasm: We observed tumor growth delay in the FAP KO animals compared to WT animals receiving anti-βgal T cells (Fig 6Fi, open vs closed circle); however, this did not translate to improved survival (Fig 6G, open vs closed circle, p = 0.12), unless combined with radiation (Fig 6G, open vs closed square, median survival 53 vs 84 days, p<0.01).