Thus, to validate the hypothesis of NGAL involvement in mediating the chemotactic property of BHT101 conditioned medium, we inhibited its expression in BHT101 cells by infection with the pLenti-siRNA-GFP lentiviral vector containing small interfering RNA (siRNA) sequences (siRNA 414 and siRNA 486) that bind to different regions of NGAL mRNA. This evidence concerns the gene LCN2 and infection.