The measured digitoxin serum concentration exceeded the levels normally observed in human patients more than 100 fold, without any observable adverse effects (Figure 5a).
However, at the lowest ouabain concentrations there was a tendency towards a negative inhibition, that is, a stimulation, mimicking the stimulatory effect on Na+,K+-ATPase activity normally only observable at low nanomolar ouabain concentrations [ 17].
For this reason the relevant properties will normally be readily observable properties of things; they will not be properties associated with the kind only by a posteriori investigation.
Bursts of presynaptic activity resulted in slow NO-mediated excitatory postsynaptic potentials (EPSPs) that could cause postsynaptic spiking whereas single presynaptic action potentials normally had no observable effect.
The obtained observables are normally stored into databases, one for X- and S-band each.
For example, in the econometrics literature, choice among estimators that rely on the selection on observables assumption is normally warranted on small sample arguments [6].
Normally distributed residuals that follow no observable pattern over time indicate that assumptions of the linear model are met [ 26].
Though a spectrum generated in this way will differ from an IPP spectrum by the smaller size of the observable peptides, m/z values normally ranging from 500 - 5000, analysis and comparison of peak patterns obtained in this way are essentially performed in the same manner [ 11].
