Sentence examples for background levels were measured from inspiring English sources
During the on-site acceptance tests, the following background levels were measured: <10−16 for tritium, <10−15 for 14C, <10−15 for 10Be (down to <10−16 in a later 3 h run), 2 × 10−15 for 26Al, 2 × 10−13 for 129I and 9 × 10−12 for 41Ca and for 239Pu (240Pu) a 1.5 (0.5) pg per mg iron, which demonstrates the multi-element capability of the system.
Again, only background levels were measured in the groups being immunized orally with nOVA (Figure 3A).
Even when the HMW-MAA catching mAb was directly incubated with the purified rabbit IgG and subsequently detected with AP-conjugated swine anti-rabbit IgG, high background levels were measured (data not shown).
Brain regions and background levels were measured unilaterally from anatomically matched sections.
Average den-sities of the bands above background levels were measured using a BioRad GS-800 Calibrated Densitometer using Quantity One 4.6.4 software.
TCDD concentrations above background levels were measured in the serum of some TCP workers and concentrations of the higher chlorinated dioxins were elevated in PCP workers.
Background cGMP levels were measured in tubes that contained the incubation mediums but no protein.
Background radioactivity levels were measured using a handheld intraoperative gamma detector/probe (programmed to read out in counts per second) at the skin surface well away (not less than 20 cm) from the injection site.
Finally, A20 β -KO mice were backcrossed into a non-obese diabetic genetic background, and glucose levels were measured every week in order to follow diabetes development.
A different behaviour comparing the two genetic backgrounds was observed when MGL1 levels were measured.
Blood lead levels were measured simultaneously to blood cadmium levels using multielement atomic absorption spectrometry with Zeeman background correction (NCHS 2006a, 2007b, 2007c).
