Bacterial cells dividing by binary fission in laboratory culture increase in size when nutrients are abundant (Henrici 1928), a phenomenon that has been well analyzed genetically (for review see, Chien et al. 2012).
Water samples were collected monthly at closely spaced intervals in the top 2 m of the saturated zone from a leachate-contaminated well and an uncontaminated well, and analyzed for δ18O, δ2H, non-volatile dissolved organic carbon (NVDOC), SO42−, NO3− and Cl−.
Following an additional 2 h of incubation of softly shaken wells (60 rpm) at room temperature, 100 μL aliquots from each well were analyzed for absorbance at 570 nm on a UV/vis spectrophotometric microplate reader (Molecular Devices, Spectra Max 190).
Further, mucosal tissue samples were evaluated histopathologically as well as analyzed for gene expression of pro- and anti-inflammatory cytokines, cluster of differentiation (CD) cell surface proteins, and select transcription factors.
To consider the specific energy market condition as well, we analyzed for Germany exemplarily the expected demand pattern for flexible bioenergy in systems with higher shares of solar and wind energy ("Demands on bioenergy from the transition of the energy system").
After 24 hours of treatment, supernatants were collected from each well and analyzed for PGE2 concentration with an Enzyme Immunoassay kit (Item number 514010, Cayman Chemical Co., Inc., Ann Arbor, MI).
To evaluate clonogenic potential, spheres from each of the WT and TLX-silenced cells were dissociated and reseeded at a density of 1000 cells per well and analyzed for secondary sphere formation as an indicator of self-renewal potential.
Four wells were analyzed for each condition, and wells containing medium plus MTT but no cells were used as blanks.
Each well was examined for single cell, and only the wells that contained single cell were marked. 2 weeks later, wells were analyzed for sub-tumorspheres formation.
Of the 116 wells from which two samples collected in August 2008 and March 2009 were analyzed by HR ICP-MS (the remaining 9 wells were analyzed for As only once), concentrations in the <1−500 μg/L range varied in all but 4 cases by less than 25% or less than 30 μg/L.
