The finding that a small number of miRNAs report different microarray signals when prepared by different methods raises the question of whether these differences reflect real differences in the concentrations of these miRNAs in the different sample preps.
There were differences in the concentrations of the studied heavy metals between different organs and between sites.
Analysis of the administrative data found distinct differences in the concentrations of female and male students in different occupational cadres.
The cause of hyperthyroidism may be distinguished based on relative differences in the concentrations of thyroxine, triiodothyronine, and thyrotropin.
In addition, differences in the concentrations can be seen for each element along each profile.
The slight differences in the concentrations are due to seasonal changes, e.g., rainy and dry season.
However, treatment differences in the concentrations of mineral N in soil became apparent in this study 42 days after planting of the first tomato crop (Figs. 3a, 4a).
Concentration profiles for more than 30 species have been analyzed, and the observed differences in the concentrations of several intermediates, in particular potential precursors of benzene, are discussed.
The data did not demonstrate any consistent differences in the concentrations of metallic elements next to stressed and nonstressed (control) miniplates and screws of either material.
After neutralizing MSC-CM by anti-VEGF antibody, the inclusion of VEGF in MSC-CM was below the detection limits by ELISA, whereas there were no significant differences in the concentrations of the other factors.
Instead, we argue that the difference in oxidation rate between the bacteria/lipid/pyrite and bacteria/pyrite systems must be largely due to differences in the concentrations of surface colonized bacteria for the two systems.
