Serum was more effective than BALF in preconditioning BM-MSCs and led to a significant reduction in lung inflammatory cell counts and levels of TH2 cytokines (IL-4 and IL-13) and eotaxin, and lung function improved in a murine model of HDM-induced allergic asthma (Abreu et al., 2019a). The gene discussed is IL4; the disease is allergic asthma.