Exploring the key functions of T cells and the regulation of the immune microenvironment in prostate cancer using single-cell RNA sequencing and bulk RNA sequencing. Zhidu Wang Yan Xing Dongmei Shang Xuefei Jin a 2nd Inpatient Area of Urology Department, China-Japan Union Hospital of Jilin University, Changchun, Chinab Department of Outpatient and Emergency, China-Japan Union Hospital of Jilin University, Changchun, Chinac Key Laboratory of Urology Tumor of Jilin Province, Changchun, China