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Evaluation of the impact of increasing the indolyl 5-alkyloxy chain length on the morphological effects of 2-methylindolyl-pyridinyl-propenones in U251 glioblastoma cells. Phase contrast images of live cells were obtained as described in the Experimental Section. Compounds were added at the concentrations listed at the top of each panel. The control cells shown in the top panel received an equivalent volume of the DMSO vehicle.
