On problem with IRES vectors ?inability to transcribe the transcript following the IRES sequence if the first MCS is empty. The new pIRES2-acGFP1acGFP1 vector was used as a control for the pIRES2Gal1-acGFP1 construct. Both vectors were sequenced through their multiple cloning sites to ensure no PCRinduced mutations were present.Transfection and stable clone generationParental, control, and galecti