Fig. 3. Effect of O2 on net rates of NO and N2O production expressed as a percentage of the anaerobic rates. Rates were measured 5 min after addition of O2. Error bars indicate standard errors 
, and those not shown were smaller than the symbols
Fig. 3. Effect of O2 on net rates of NO and N2O production expressed as a percentage of the anaerobic rates. Rates were measured 5 min after addition of O2. Error bars indicate standard errors , and those not shown were smaller than the symbols