This may be due to differences in laboratory protocols, levels of optimization effort, stringency of criteria for success, sample sizes, and biased selection of well-tested markers in previous studies.
We tested whether DNA quantity (calculated as number of DNA copies 5 μl-1) was influenced by the same variables we analyzed for PCR success (sample age, species, lake of origin, and number of attempted PCR reactions) using a GLM with lake and species as categorical variables.
Hopefully, with a bit more work in the lab and field, and a little more success sampling, we'll soon be able to solve the mystery of social evolution in this fascinating group, with implications for animals generally and perhaps even our own species.
Recently, the variable sampling interval (VSI) control scheme in which the sampling interval between two success sampling points is varied based on the preceding T2 value has been shown to provide an increase to the detecting efficiency of the original T2 chart.
Despite recent cautioning on the use of paternity data to infer fertilization success in situations of sperm competition, our results show robust and conclusive support for the hypothesis that biased paternity success sampled late in the embryonic development of the Peron's tree frog is consistent with the corresponding between-male difference in siring success at fertilization.
Finally, as the capacity of such a system to react rapidly is crucial for its success, sampling teams should be created to collect material and obtain virologic testing results with a minimum of delay in other countries harboring hemorrhagic viruses.
We fit a binomial generalized linear model (GLM) to amplification success per sample with species identity, lake of origin, tissue type, sample age, and number of PCR attempts as explanatory variables.
The dreary economy is also propelling the success of sample sales.
The success of sample focusing during injection and gradient elution depends not only on an analyte's absolute retention, but also on how rapidly the analyte's retention changes during the mobile phase gradient.
In this study, the strongest indicator of array success was sample age, therefore younger aged cohorts should be exploited where possible.
Scanned GeneChip files (CEL files) are normalized and assessed for hybridization success and sample quality by a proprietary gene expression data quality control system (ResultsPX™), previously described [ 2].
