...cells, increases reproducibility, as it eliminates the variation associated with repeated transient transfection...polyethersulfone filter, Nalgene, 565-0010 (for viral preps, if prep was not previously filtered) Microcentrifuge...long-term protein expression studies. Moreover, repeating experiments in a stable cell line, as opposed ...and transduce Cells Day 2–3 (am): Remove media, replace with fresh media containing selection reagent Day...15 mL conical tubes, VWR 21008-216 Lentivirus preparation Appropriate antibiotic for selection (e.g. puromycin...puromycin, blasticidin) Reagent Preparation DMEM Complete: 10% v/v FBS and 4 mM L-alanyl-L-glutamine (... after 20-30 passages. Do not add penicillin/streptomycin to the media, as it can affect viability and...