Another question is whether the simulations are sufficient to sample the possibilities.
Although both samples were randomized cluster samples, the possibility of selection bias cannot be overlooked.
During tissue fractionation and incubation steps for H2O2 determination in such samples, the possibility of getting inconsistent result cannot be ruled out.
Our results also provide additional confirmation of the monophyly of the SAR clade, and, because of our carefully chosen taxon sampling, the possibility that this grouping was a long-branch artifact (Cavalier-Smith 2009) is now reduced.
In gene expression studies conducted on pigs within the PHGC trials, the blood transcriptome is examined because of its collection ease, the large number of animals that can be sampled, the possibility of repeated sampling of the same individual, and, ultimately, the chance to develop biomarkers for selection purposes.
The processing of blood and tissue samples, the possibility of excess DNA in blood samples due to nucleated erythrocytes, and the analysis of degraded samples were all examined, as was the question of long term storage of blood samples on FTA® paper.
Higher quantum confinement is expected in sample B as compared to sample A. The possibility of quantum confinement effect in these Si NSs is investigated by Raman experiments.
Study limitations include the potential for bias because of the small sample size, representativeness of the sample, and the possibility of inaccuracies in respondents' self-reported time estimation of warfarin-related procedures.
Direct VEGF staining is only performed on a small tissue sample, introducing the possibility of sampling error given the heterogeneity in angiogenesis distribution commonly seen in tumours.
Convenience sample increases the possibility of bias and may lead the sample to be similar in many aspects.
