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Colony-forming efficiency of selected cell lines in the presence of imidazo[1,2-a]pyridine derivatives. Colony-forming efficiency of PNT2-C2, BPH-1 and PC3 cell lines treated with 3a (blue), 3b (purple), 3c (green) and 3d (orange) at EC50, EC50×2, and EC50×5 test concentration.
