H NMR spectra of urine were acquired on a Bruker DRX600 spectrometer operating at 600.13 MHz H observation frequency using the BEST (Bruker Efficient Sample Transfer) 5 mm flow-injection probe for sample delivery and analysis.
These needs have generated a variety of device designs from microelectrodes for fast scan cyclic voltammetry (FSCV) and electrophysiology to microdialysis probes for sampling and detecting various neurochemicals.
Microdialysis probes were implanted in striatum, for sampling brain extracellular fluid (ECF) concentrations, and in lateral ventricle (LV) and cisterna magna (CM), for sampling cerebrospinal fluid (CSF) concentrations.
Watermelon provides a number of QC steps including the use of SNP probes for sample relatedness and identification of possible sample mix-ups.
To obtain supervised data on signal-intensity ratios for different copy numbers, as in the previous study (4), we measured the signal intensities of probes for samples with different numbers of X chromosomes in triplicate and used GIM to obtain the signal-intensity ratios of nX (representing each of the X chromosomes, where n = 1, 2, …, 5) to 2X.
After preprocessing the raw data, the ratio of the intensity for each probe from samples treated with Tan IIA to that from untreated samples were calculated.
We used the same HF probe for all samples (type D, approximately 80 μm integration width, see Fig. 1 – Wassenberg et al. 2015b).
Bead summary data was imported into GenomeStudio to remove control probes and to produce a text file containing the signal and detection p-values per probe for all samples.
The radioactive signal for the mt-tRNAGlu probe was normalized to that of the tRNALeu UUR) probe for each sample.
Text files containing the signal and detection P-values per probe for each sample were imported into FlexArray software v.1.6.2 (McGill University and Genome Quebec Innovation Centre; http://gqinnovationcenter.com/services/bioinformatics/flexarray/index.aspx?l=e).
Analysis included control probes for assessing sample-independent and sample-dependent performance.
