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Figure 5 | BMC Microbiology

Figure 5

From: Measurement of microbial activity in soil by colorimetric observation of in situ dye reduction: an approach to detection of extraterrestrial life

Figure 5

Reduction of XTT by the heat-treated control soil and the life-positive Lake Boney Basin, Antarctica soil Data points represent: (), Live Boney Basin Soil; (■), Killed Boney Basin Soil; (), Negative Control (no soil); Lake Boney Basin soil only very slowly reduced DCIP (data not shown). Data points are means of three replicates, +/- one standard deviation. Dye-only controls showed no reduction over the time course of the experiment. AU = Absorbance Units

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