Figure 6From: Measurement of microbial activity in soil by colorimetric observation of in situ dye reduction: an approach to detection of extraterrestrial lifeXTT reduction by a pure culture of Pseudomonas putida . Data points represent: (●), control without pseudomonad; (■), soil inoculated with P. putida. Data points are means of three replicates. AU = Absorbance UnitsBack to article page