FIGURE 1.

Original traces of simultaneous measurements of (A) oxygen consumption and (B) H₂O₂ production, in turtle ventricular mitochondria. Data are taken from cardiac mitochondria that were isolated from a juvenile turtle previously subjected to developmental hypoxia. Mitochondria were added to the chamber, and a range of substrates and inhibitors were injected to investigate the electron transport chain (see section “Materials and Methods” for full details). MPG, malate, pyruvate and glutamate; ADP, adenosine diphosphate; SUC, succinate; FC, carbonyl cyanide-4-(trifluoromethoxy)phenylhydrazone (FCCP); ROT, rotenone; AA, antimycin-A; TM, N, N,N,N-tetramethyl-p-phenylenediamine (TMPD); AS, ascorbate; AZ, azide.