A & B) OCR of primary cortical neurons following the injection of 10 μM drug or vehicle control (CON), with ABT-737 added in A and UK5099 in B. The Mito Stress Test was conducted subsequent to the injection of the test drug, which consisted of the sequential addition of oligomycin (Oligo, 0.3 μg/ml), followed by FCCP (3 μM) or 2,4-dinitrophenol (DNP, 200 μM), and then antimycin A (Anti A, 1 μM). OCR values are means ± SD from three wells (with the exception of CON in B, which is the mean of two wells). OCR are baseline-normalized as in Fig. 1.