Colony formation and proliferation of untransduced (UNT), scramble (SCR), and miRZip-378a-3p (ZIP) cells. A and B: Colony formation in methylcellulose of SCR and ZIP cells. C: Time course of cell proliferation of UNT, SCR, and ZIP cells in triplicate. D: Neutrophil migration experiments were performed using the Transwell system assay and UNT, SCR, or ZIP cells treated with all-trans retinoic acid (1 μmol/L) for 7 days. Data are expressed as the fold change compared with basal in each group. ∗P < 0.05. Original magnification (inverted microscope), ×10 (A).