These days the police hardly concern themselves with such cases, but at the time the possession of even barely detectable quantities of controlled drugs was a more serious matter.
At 2 days in culture, all culture supernatants (primary, CD133+ and CD133-depleted) contained barely detectable quantities of LIF (< 10 pg/ml), but over time LIF production increased significantly, although remaining lower in CD133+ retinal cells, corresponding to their increased ability to generate neurospheres.
Using CE MS/MS, detectable quantities of HQNO were observed from a biofilm extract; our lack of detection of this compound by MALDI and SIMS may indicate that HQNO is localized below the MALDI and SIMS sampling depth within the biofilm, or that low levels (below our MSI detection limits) are uniformly distributed on the surface.
It appears particularly clearly in inert solvents such as benzene, in which catalysis by molecular acids and bases is frequently observed despite the absence of detectable quantities of ions derived from the solvent.
If the resultant ischemia is severe enough to cause sufficient myocardial damage, detectable quantities of cardiac biomarkers will be released into the bloodstream [16].
When the electrolyte contained MPA, the extended potential holding procedure resulted in significant roughening of the electrode with no detectable quantities of Au in the electrolyte.
Inductively coupled plasma-mass spectrometry investigation indicates that all batteries analyses contain Ni, Cu, As, Sr, and Ba and most of the batteries have detectable quantities of Pb (92%), Cr (88%) and Co (88%).
