Figure 2From: Cloning of the canine RNA polymerase I promoter and establishment of reverse genetics for influenza A and B in MDCK cellsAlignment of canis familiaris sequence and sequences of the MDCK Eco RI- Bam HI fragment in pK9Pol I EB. The positions of the primers (PrimEx 1 and PrimEx 2) used in primer extension reactions on MDCK whole cell RNA are indicated by arrows.Back to article page