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. 2014 Jun 4;2(2):111–127. doi: 10.3390/microorganisms2020111

Figure 4.

Figure 4

Butyrolactone I concentration in A. terreus cell pellets as measured with (a) HPLC and (b) LC-ESI-MS-MS. Butyrolactone I was added to a final concentration of 100 nM (0.0425 µg/mL) to the A. terreus cultures at 24 h post inoculation (Test 1), 96 h post inoculation (Test 2) and 120 h post inoculation (Test 3). No butyrolactone I was added to the control set. The arrows indicate the time of butyrolactone I addition. The error bars represent standard error of the mean of three biological replicates. Statistically significant differences are denoted with following statistical levels: * p < 0.05; ** p < 0.01; *** p < 0.001.