A much higher concentration of PP2 and SU6656 is needed to see a significant growth inhibition in K2 cells than in TPC-1 cells. In K2 cells after 4 days of treatment, the cell growth was repressed for 36.5 or 50.9% (p < 0.001) by 5 or 10 μM PP2, or 34 or 52.4% (p < 0.001) by 5 or 10 μM SU6656, respectively, when compared to untreated cells...