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. Author manuscript; available in PMC: 2013 Sep 4.
Published in final edited form as: Cell Calcium. 2013 May 20;54(2):86–94. doi: 10.1016/j.ceca.2013.04.006

Fig. 3.

Fig. 3

Effect of calcium addition on mitochondrial membrane potential in digitonin-permeabilized HepG2 (A) and U87 (B) cells. Calcium concentrations at panels (A) and (B) are in nM. Panel (C) shows the effect 2 µg/ml oligomycin and 5 µM rotenone on the mitochondrial membrane potential in HepG2 cells, CCCP was added in concentration of 1 µM. (D) Lack of changes in the mitochondrial membrane potential of digitonin-permeabilized HepG2 cells in response to calcium addition and in the presence of the inhibitor of mitochondrial calcium uptake ruthenium red.