Synergistic effects of interferon-alpha in combination with chemoradiation on human pancreatic adenocarcinoma

Figure 1 Influence on cell survival Equal amount of cells were seeded out on day +1. A: Numbers of viable cells were determined after five-day treatment. Cell numbers of untreated cells were set to ‘1’ and cell survival index was calculated. B: Shows the influence of IFN-α in combination treatments. Values of treatments without IFN-α were subtracted from values after combination treatment. Data is shown as mean±SD error from eight cell lines with at least three separate experiments. ^aP<0.05 was labeled with an asterisk; ^bP<0.01 with two asterisks and ^dP<0.001 with three asterisks.