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Percentage of radioactivity applied to M. lacus strain SDZm4 culture supernatants in SDZ-amended mineral medium separated into 14C radioactivity of SDZ and 2-AP measured with a radio-HPLC detector. 2-AP and SDZ radioactivities were fitted with equation 1 and equation 2, respectively. tts (see equation 3) were 11.3 days for 2-AP and 10.5 days for SDZ.
