To assess the role of CD4+ T cell‐induced chemoresistance of PCa tissues, we detected the expression of molecules examined in vitro through IHC, such as Ki67, P‐STAT3, cleaved PARP, and CCL5 in the xenograft tumors, and results were consistent with the findings in vitro (Figure 7D). This evidence concerns the gene MKI67 and posterior cortical atrophy.