Exogenous expression of MSFD2 inhibits growth of NSCLC cell lines in vitro and in vivo. (A) Western blots showing MFSD2A expression in MFSD2A-transfected and empty vector-transfected cell lines. (B) Colony number in each cell lines tested by colony formation assay. Data are given as mean ± SE of 6 independent replicas. (C) In vivo growth of MFSD2A-transfected and control (empty vector-transfected) A549 cells. Data are given as mean ( ± SE) tumor volume in 5 mice (control) or from two groups of 5 mice each injected with two independent MFSD2A clones.