(b) SERS spectra of Cy-3-OCH3 dye at different concentration spotted on the same substrate.
A lower limit of detection was calculated for each kinase-substrate interaction for each protocol by defining the minimum amount of protein (relative solution concentration) spotted that is required to observe significant signals on the arrays.
Clearly, the amount of immobilized probe on the coated glass surface is a critical array fabrication variable, therefore factors that affect the amount of retention characteristics, such as surface chemistry, probe concentration, spotting buffer, spotting conditions, cross-linking and blocking conditions are important to understand.
However, superimposed on this trend are increased U and Th concentrations at low-angle boundaries (Figs 6a, 7, and 8) with the highest measured U and Th concentrations (spot 39, Figs 6 and 7) corresponding to the boundary that accommodates the largest misorientation (4°).
UCr24 } 0.392 Na S : Na concentration in spot urine mEq / L Cr S : Cr concentration in spot urine mg / dL Pr.
Ninety-five percent of the protein spots on the 2D gels that did not vary in their concentration and spot intensity served as reference.
Counting was performed in three tumour areas of high macrophage concentration (hot spot areas).
We measured arsenic concentration in spot urine specimens at 8 and 30 weeks of pregnancy.
Serum cystatin C concentrations and urinary albumin concentration in spot urine samples were measured by immunonephelometry on a Behring Nephelometer II (Siemens Dade-Behring, Marburg, Germany).
For each oxygen concentration and spot imaged, the average phosphorescence intensity was divided by the average fluorescence intensity to obtain the phosphorescence-to-fluorescence ratio.
