When we transferred OT‐Ι CD8+ CTLs, which were pretreated with UA or DMSO in combination with Tat‐ERK156‐166, into B16MO5‐Fluc lung metastases 10 days after tumor inoculation (Figure 4N), there were no significant differences in the accumulation of transferred CTLs, tumor progression, and survival time between the two groups (Figure 4O–Q). Here, TAT is linked to neoplasm.