AIF1 and bronchiolitis obliterans syndrome: At 90 days of culture, BO innate cultures expressed TMEM119+ and IBA+ microglia-like cells (Fig. 1B, left), and the TMEM119+ microglia-like cells (which were previously shown to be TMEM119+ and IBA1+ [24]) were present in BO co-cultures (Fig. 1B, right).