In May 2025, we attended IMMUNOLOGY2025
, the annual meeting of the American Association of Immunologists in Honolulu, and recorded daily episodes discussing highlights of the previous 24 hours. Here is the second of five special episodes from the meeting. Brenda and Jason discuss highlights from sessions on tumor-infiltrating lymphocyte and T-cell receptor therapies, unconventional functions of Tregs, and advances in single-cell RNA sequencing.