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Fig. 1. Temperature effects on respiration rates (A), respiratory control and P/O
ratio (B) of isolated oyster mitochondria. Respiration rates were measured
after addition of ADP (state 3), after all ADP was used up (state 4) and in
the presence of oligomycin (state 4+) in isolated oyster mitochondria at
different temperatures. Respiratory control ratios were determined as the
ratio of state 3 over state 4 respiration (RCR) or state 4+ respiration (RCR+)
at different temperatures, and phosphorylation efficiency (ADP/O). Asterisks
denote values that are significantly different from those of the respective
controls measured at 15°C. Values are means ±
S.E.M., N=68.