CXCR5 and familial pancreatic carcinoma: Multiple reports using flow cytometry and single‐cell sequencing on solid tumors show the presence of memory‐like T cells among tumor infiltrating lymphocytes (TILs) with similarities to CXCR5+PD‐1+ CD8 T cells in melanoma, lung cancer, pancreatic cancer, and colon cancer [19, 20, 21, 23, 24, 25, 26, 27].