PEI transient transfection doesn't work on CHO-S cells?

I have tried to transfect CHO-S cells with a plasmid DNA and PEI (1:3 and 1:6) and run SDS-PAGE on harvested medium (3-4 days post-transfection) and couldn't see a protein of interest. This...

02 February 2018 2,473 5 View