For 1,2,3,7,8,9-HxCDF, which had no available half-life data, we used the reference half-life for 1,2,3,6,7,8-HxCDF.
For each phenanthrene concentration or reference, half of the samples were labeled with the fluorescent dye Cy3 and the other half with Cy5.
We found the slope (βage) and the intercept [β0 age)] coefficients by using a linear interpolation between the infant and adult reference half-lives (shown in Tables 5 and 6).
Approximately half the studies used the cerebellum as the reference region and half the cerebellar cortex for calculating SUVr, and in most cases a binary yes/no answer was used for the visual analysis.
We based reference half-lives of PCB-77 and PCB-81 on measurements from samples of adipose tissue, whereas we determined reference half-lives for the 10 remaining PCB congeners based on measurements of blood (Ogura 2004).
We based reference half-life values for infants on congener-specific values reported by Leung et al. (2006) where available.
In this study we provide congener-specific reference half-life values for adults and infants and a method of half-life estimation based on individual characteristics.
For the metacarpal shaft scan, the reference line was half (50%) the total length of the metacarpal shaft assessed on the scout view.
The ICTP level was above the reference range in half of the patients in the S group, whereas the PICP and AP levels were elevated in 35%.
Before re-annotation of the reference genomes, nearly half of its gene models appeared to be affected by changes in the protein coding region in either turnip (17,052) or rapid cycling (18,734) with moderate to high impact [ 17] (Additional file 1).
Throughout the Results section, we will refer to the N50 metric of an assembly (resp. NG50) as the longest contig size, such that half the assembly (resp. half the reference) is contained in contigs longer than this size.
