In May 2023, we attended IMMUNOLOGY2023, the annual meeting of the American Association of Immunologists in Washington, DC, 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 sessions on peripheral neuroimmune interactions and tumor cellular therapy. Highlights include the President’s Address by Dr. Mark Davis and Dr. Barbara Rehermann’s presentation on wild mouse microbiota.