SBI has created a set of minicircle parental cloning vector formats to choose from. Select from CMV or EF1a promoters, GFP, RFP and Puro markers. The minicircle parental cloning shRNA vector formats feature either CMV or EF1a expressing the markers and a downstream H1 promoter to express high levels of the cloned shRNA sequence. See the Table below for the particular MCS cloning sites for each of the minicircle DNA vectors.