MRC1 and acute respiratory distress syndrome: Besides, the MFIs of BALF macrophages CD80 were significantly higher in Rab26 KO mice than in WT mice (Figure 5G), while the number of CD206+ macrophages from BALF was lower in Rab26 KO mice than that in WT mice (Figure 5H) during eCIRP-induced ALI/ARDS.