Figure 3. Release of pro-inflammatory cytokines in BALF-exosomes by different cells after ALI. (A–C) ELISA for 3 key pro-inflammatory cytokines (TNFα, IL-1β and IL-6) in respective BALF-exosomes at 1 hour, 4 hours, 8 hours, 16 hours and 32 hours after ALI. (A) TNFα. (B) IL-1β. (C) IL-6. *p<0.05. N=5.