In May 2025, we attended IMMUNOLOGY2025
, the annual meeting of the American Association of Immunologists in Honolulu, where we recorded daily episodes highlighting key developments from the previous 24 hours. This is the fourth of five special episodes from the meeting. In this episode, Brenda and Jason discuss how macrophages contribute to lung tissue repair and influence hormone activity, as well as the mechanisms linking MHC-II abnormalities to autoimmune disease pathogenesis.