Sentence examples for unfavorable samples from inspiring English sources

Based on the degree of DNA fragmentation, FFPE samples can be distinguished into those with relatively well preserved DNA (favorable samples, roughly ¾ of our diagnostic cases) and those with very fragmented DNA (unfavorable samples, ¼ of our diagnostic cases).

In the unfavorable samples, UV-concentration does not correspond to the amount of amplifiable DNA, which is unpredictably low, as indicated by the corresponding high Ct values obtained for control DNA targets (usually >33).

For this reason, and also because commercially available kits for Q-PCR-based DNA quantification still need standardization [49] while increasing cost, it seems important to determine the degree of DNA fragmentation and to identify the unfavorable samples that need special attention in the interpretation of genotyping results by any molecular method.

The designed sampling process was empirically proven to be practically applicable and provide better scientific assurance of sampling accuracy, which may reduce economic risks and their consequent costs caused by unfavorable sampling in the propose traceability system.

When using Euler-characteristics directly for classification, for each sample 256 features would need to be considered (i.e., the characteristic's values at 256 gray levels), which gives an unfavorable sample size to dimensionality ratio.

To differentiate between tumors with "favorable" and "unfavorable" prognosis, samples were separated according to their "time recurrence" (period of time of relapse after the first event of breast cancer, denoted in years) and "event of metastasis" (if metastasis occurs during this period).

By the comparison of gene lists revealed from the statistical analysis of early versus late stage, MYCN-non-amplifying versus MYCN-amplifying and favorable versus unfavorable NB samples and from the literature search, we have found 519 genes that were reported at least twice in these gene lists (Additional file 5).

This is beneficial whenever the conditions are unfavorable for sampling (Karteris et al. 2005).

Whereas the expression of this gene was usually down-regulated through DNA methylation in favorable and unfavorable NB tumor samples, it was up-regulated in degenerating NB cells within locally regressing areas of mass-screened tumors.

To cope with the unfavorable ratio of samples (n = 155) and features (p = 200) [ 37], a feature selection scheme was applied.

This list of studies for each therapy allows the reader to get his/her own effective sample size by summing up the prior unfavorable evidence (total sample size of relevant negative clinical trials).