Also, the fin sample included multiple tissue types, thus contributing to variation in the data, and reducing the possibility of finding differentially expressed genes with stringent statistical testing.
Overall, the analysis indicated that the CFHR1-CFHR3 deletion and CFH locus accounted for "modest " levels of variation in the phenotype, consistent with the possibility of multiple susceptibility alleles in the region of chromosome 1 that was analysed (Li et al. 2006a, b).
This minimised the possibility that variation in the phonic structure of groans could have occurred due to exhaustion of the animals.
We can therefore not rule out the possibility that variation in the candidate genes has a smaller genetic effect on aggression.
These findings open the possibility that variation in the number of resident CD8+ T cells may play a role in the altered CHS response observed in Df11(1)/+ and Dp11(1)/+ mice.
The importance of TNF α in bladder cancer pathogenesis raises the possibility that variation in the gene for TNF α (TNF) may predispose to risk of bladder cancer or alter subsequent tumour behaviour.
There is also the possibility that variation in the completeness of digestion caused by variation in DNase I concentration could lead to sequence-based bias of DNase I digestion [ 4] and sequence-based differences in amplification or hybridization to the tiling microarray.
In light of this deficiency, we have explored the possibility that variation in the expression of cell surface PGs, widely recognized to be key factors in the control of tumour progression [ 33, 56- 59], could afford more effective means of prognosticating patients affected by these tumours.
In spite of evidences of variation in the species reproductive biology and the possibility of cross-pollination in Brazilian populations of O. maculata by butterflies (Aguiar et al. 2012), the genetic diversity levels suggest that self-fertilization, as pointed out by González-Díaz and Ackerman (1988), and vegetative propagation are the predominant forms of reproduction in the studied populations.
Several researchers have found significant family effects in common garden experiments, raising the possibility of genetic variation in the degree of melanization [ 14, 22].
