...lentiviral vector transfected into 293T cells using a polyethylenimine (PEI) transfection protocol. This ...packaging cells Day 1 (pm): Transfect packaging cells Day 2 (am): 18 h post-transfection. Remove media, replace...filter Transfection grade DNAs: Lentiviral Packaging plasmid(s), Envelope plasmid, and Transfer plasmid... optimized for each transfer plasmid. Pro-Tip Endotoxins can inhibit transfection; therefore, plasmid ...modified for alternative packaging cell lines or transfection reagents. Once produced, lentivirus can be used...brands and lots of FBS can promote or inhibit transfection. Test a variety of brands and lots of FBS to... 2 for ~20 h. Prepare a mixture of the three transfection plasmids into OptiPro SFM: Reagent Amount per...