Li, 2016 [16] C57BL/6 mice aged 6–8 weeks, i.n. infection, avian influenza virus Hong Kong/2108/2003 (H9N2) Mouse BM-MSCs (P3–P10), 1×105 cells·mouse−1, i.v. (tail vein), single dose, 30 min or day 1 post infection Day 3 No Regardless of time of administration, syngeneic MSCs did not reduce lung virus titration, increased survival rate, decreased lung oedema, decreased histological injury, and improved gas exchange; early and late administration reduced BALF and serum cytokines (IL-6 and TNF-α); early administration reduced BALF chemokine (GM-CSF), reduced BALF and serum chemokines and cytokines (MIG, IL-1α, IFN-γ), and increased anti-inflammatory cytokine IL-10 in BALF and serum Nonspecified (soluble mediators) No