The labeled preparations were stored at -70°C in the presence of 2 mg BSA per ml.
Cell counting and classification in 4 subsets (polygonal elongated, non-polygonal/non-elongated, unclear/early spreading, and small round) were performed manually on F-actin labelled preparations.
All filter sets were purchased from Semrock (Rochester, NY) and the absence of cross-talk between different channels was checked with selectively labeled preparations.
In all cases, emission and excitation filters proper to each fluorophore were used sequentially and the absence of cross-talk between different channels was checked with selectively labeled preparations.
All the preparations for labeling and MS analysis were shown to contain adequate amounts of glycans and their labeled ones, respectively (data not shown) indicating that less than 1 μL of the labeled preparations allowed to analyze most of the N-glycans expressed on the AGP molecule irrespective of their preparations both from healthy controls and patients with cancer as described below.
[Note: Figure 2 figure supplement 1 shows details of post-capture image processing to remove the perineurial sheath. A video of the neurons rotating in 3D is also provided (Video 1).] Thus, silver-impregnated preparations imaged in this new way had all the positive attributes of fluorescently labeled preparations for which the confocal microscope has been so predominantly useful.
In addition, double-labeled neurons co-expressing NPY and 5-HT2C mRNA (Fig. 8) or NPY and 5-HT1A (not shown), and neurons single labeled for 5-HT1A or 5-HT2C mRNA (Fig. 8) and for NPY mRNA (not shown) were observed in the triple labeled preparations.
A new method for the absolute quantification of three key proteases during insulin maturation, namely PC1/3, PC2, and CPE, was developed by coupling a stable isotope dimethyl labeling preparation of internal standard peptides with SID-MRM-MS quantitative technology (for strategy scheme, see Fig. 1).
Cell labeling, preparation of detergent lysates, and immunoprecipitation were carried out as described previously [16].
Interesting, automated evaluation of the Ki-67 labelled preparation has been adjudicated as superior than manual analyses.
