When systemic tumor burden was sufficiently high (average radiance of more than 107), mice xenografted with HT-29 cells were randomized to receive no treatment, UT EBVSTs or B7H3.CAR EBVSTs while mice xenografted with NALM-6 received no treatment or CD19.CAR T cells (Supplementary Fig. S7). Here, CD19 is linked to neoplasm.