Figure 1

Comparison of CNAs for 24 target loci in cell lines representing different stages of OSCC determined by ddPCR, CGH arrays and SNP arrays. CNAs determined by ddPCR (green bars), array CGH (orange bars) or SNP array (blue bars) for (A) CAL27 (inferred to be diploid), (B) SCC-25 (diploid), (C) SCC-4 (triploid) and (D) SCC-9 (triploid). Error bars for ddPCR data represent a 99% confidence interval, while error bars for CGH show the respective high and low normalized log2 ratio for the probes that map closest to that target locus. The scale for Δ copy number inferred from SNP array has been adjusted to reflect the ploidy level of the cell lines.