In May 2024, we attended IMMUNOLOGY2024™, the annual meeting of the American Association of Immunologists in Chicago, and recorded daily episodes discussing highlights of the previous 24 hours. Here is the first of five special episodes from the meeting, in which Jason and Brenda highlight sessions on innate and innate-like cells and transplant immunology. Discussions include the role of hypothermia in protecting ventilator-induced lung damage and Siglec-E knockout in transplant rejection.