After all, although the analytical workflow described is effective at measuring hundreds of cell-related signals in various individual neurons, these sampling and metabolic measurement approaches require expertise in sample isolation, sample preparation, instrumentation operation, and have moderate throughput.
For each condition, the dataset included four biological replicates (independent with respect to B. subtilis growth, RNA isolation, sample preparation and array hybridization).
RNA isolation, sample preparation, and array hybridisation were performed as described previously (Kim et al, 2010a).
A typical experiment will have protocols for organism growth and isolation, sample preparation, library preparation, sequencing/arraying, alignment/normalization and peak calling.
Moreover, radicles consist of distinct developmental regions in the longitudinal direction and radicles were halved without detailed prior investigation so that different developmental zones most likely harboring different gene expression patterns might have been grouped to each RNA isolation sample.
In order to get a more precise comparison, we performed our study using the same cDNAs, to exclude all errors in the pre-analytic variables, such as sample isolation, sample volume, logistics and storage conditions, as well as important analytical variables, such as CTC isolation methodology, RNA isolation, and cDNA preparation steps [ 26].
After plasma isolation, samples were run on a standardized chemistry analyzer, which applies plasma directly to individually wrapped slides ("Vettest 8008" chemistry analyzer, IDEXX Laboratories, Inc., Westbrook, ME).
Following primary isolation, samples can be inoculated for further DST, either by MODS, molecular techniques or conventional phenotypic DST, where available.
To verify the absence of cellular material after ECM isolation, samples were stained with DAPI as a nuclear stain.
After isolation, samples of the prepared RNA were further purified using a Qiagen RNeasy column (Qiagen, Valencia CA).
For protein isolation, samples were grinded in liquid nitrogen, after which cell lysis buffer (see above) was added.
