As you can see below, I cloned piggybac transposon vector which have two independent promoters (CMV-A, B, C gene / EF1a core-PuroR), but it didin't work well.
After Electroporation with transposase construct, puromycin selection was well but there are no evidance of gene A,B,C expression.
So I've been struggled to find out the reason.
What do you think of the problem in my construct?