However, given that both TL and these factors are changing and having an effect over the entire lifespan of an individual, it is difficult to establish directionality of effect, particularly when the various factors are so highly correlated.
In this regard, as small video recorder has the short lifespan due to small battery size [8], it is difficult to cover the age-related change of behaviour over time.
Thus, it is difficult to determine whether worms fed axenic diets have a longer lifespan due to lack of innate immune signaling (the opposite of our hypothesis), due to dietary restriction, or due to induction of stress response genes.
However, it is difficult to assess the contribution of this non-uniformity to the final results of lifespan and BG based on the literature.
Unfortunately, this hypothesis is difficult to test in Ethe1 −/− mice, whose vascular lesions, possibly because of their very short lifespan, are much less prominent than those of EE patients (Giordano et al, 2012).
"It is difficult, very difficult.
In general, we have found hypoxic hypersensitivity is difficult to produce in our model; this may reflect genetic redundancy and is reminiscent of the relatively uncommon phenotype of shortened lifespan as compared to prolonged lifespan.
Hence, it is difficult to quantify virulence as the instantaneous mortality rate and, following Day (2002), virulence was quantified as the reduction in the host expected lifespan by infection.
That study is difficult to compare to our current study since their genetic experiments were performed in germline deficient backgrounds and did not address the role mir-71 has in determining wild type lifespan.
Owing to that, the cement and casing stress states during the wellbore lifespan are also difficult to predict.
