They also found that the concentrations needed to trigger these adverse reactions were similar to the very low levels commonly found within the human body.
Cell viability tests have shown no cytotoxicity of the functionalized DWCNTs at the concentrations needed for optimum gene delivery.
Acid/base equilibrium chemistry is included in order to predict the pH and unionized component concentrations, needed for calculating inhibition.
To obtain 80% tyrosinase inhibitory activity, the concentrations needed for CC-EO, trans-cinnamaldehyde, and kojic acid were 51.35, 16.65, and 0.96 mg/mL, respectively.
Thus internalized silica-coated CdSe QDs were non-toxic during this time span at concentrations needed for uptake study in these cells.
Considering the varying flocculant concentrations needed to floc the different algal species, the hypothesis that related species (Chlorophyceae) show similar flocculation behavior cannot be positively proved.
The ligand concentrations needed to activate signaling in yeast expressing these plasmids spanned five orders of magnitude as based on comparisons of EC50 values.
Even though monitoring of dissolved ammonia is acutely important for environmental studies, fish farms and for industrial surveillance, no system for the performance of online measurements at the concentrations needed exists so far.
For instance, the MO concentration was below the detectable level after 30 min for 10, 20 and 40 mg/L initial dye concentrations, whereas 60 and 80 mg/L initial dye concentrations needed 120 min for 99 and 97 % degradation efficiencies, respectively.
The very large antibody concentrations needed to obtain a differential signal on the system is believed to be the cause of the signal from the unspecific antibody as it interacted with the cantilever surface, but this could not be proved in the experiments.
It appears that cryoprotectant solutions that are composed to be at the minimum concentrations needed for vitrification at moderate cooling rates are toxic in direct proportion to the average strength of water hydrogen bonding by the polar groups on the permeating cryoprotectants in the solution.
