FIG. 1.
Oxidation of atmospheric methane by the St culture. At 0 h, laboratory air replaced the 17% CH4 and 1.7% CO2 growth condition. Single pulses of methanol were added after 20.1 h (833 μM final concentration) and after 139.3 h (83.3 μM final concentration), as indicated by the arrows. Note the logarithmic vertical axis.