Extended Data Fig. 9: Pre versus post infusion detection of T cell populations in CSF via flow cytometry.

Representative pre and post infusion flow plots from S002 and S003 show no detectable CAR T (EGFRt+) cells, but detectable non-CAR T cells (both CD4+ and CD8+ T cells) in subject CSF post infusion. Representative flow gating strategy shown in Supplementary Fig. 1d.