FAP and metastatic neoplasm: To assess the UniCAR T cells' migration and infiltration abilities, P+H (10:1) spheroids were selected due to their resemblance to both solid and metastatic tumors in terms of structure and distribution.[47] To evaluate the influence of anti‐PSCA and anti‐FAP TMs in the cell culture medium, the migration statistics of UniCAR T cells in the presence of anti‐PSCA and anti‐FAP TMs (P+F), anti‐PSCA TMs (PSCA), anti‐FAP TMs (FAP), and without any TMs were compared during the first 60 min of the experiment.