Tonsils were placed in ice-cold PBS plus antibiotics ... Santa Cruz, CA) or anti-CD8 antibody (1:1000, BD Pharmagen, San Jose, CA) at 4°C for 24 h, and then washed in PBS six times for 5 min ...

First, we discovered that a specific type of T cell (CXCR5 + CD8 +) resides in the tonsils, where EBV persists in the body, ...