(D) Activities of the indicated mitochondrial complexes (I, II, III, IV, and V) in the absence or presence of rotenone (2 µmol/L), 2-thenoyltrifluoroacetone (TTFA; 1 mmol/L), antimycin A (10 µmol/L), potassium cyanide (KCN; 1 mmol/L), or oligomycin (10 µmol/L). 