Fig. 4From: A robust internal control for high-precision DNA methylation analyses by droplet digital PCRThe 4Plex corrects for variable template amount. a The 4Plex concentrations across the cell line panel. The horizontal black line at 800 copies/μl indicates the expected 4Plex concentration. b Non-normalized (dark blue) and normalized (light blue) CDO1 concentrations (methylated copies/μl) are shown for the same cell lines as in aBack to article page