The points in the chicken production chain at which contamination occurs are clearly understood, but during the past decade the picture has got worse.
Predictive design of nano-particle production via precipitation requires that the different steps through which particle formation occurs are deeply understood in order to control the final product properties and quality.
However, the mechanisms in learning by which astrogliogenesis occurs are poorly understood.
Surprisingly, the mechanisms regulating how overexpression of Ras occurs are less understood.
However, the features that define origins, the loci at which DNA replication initiation occurs, are poorly understood for most eukaryotes (Masai et al., 2010; Méchali, 2010).
It is well recognized that environmental stimuli during critical prenatal and postnatal periods can permanently alter metabolism and influence the risk of allergic diseases [ 4], yet the specific molecular mechanisms through which this occurs are poorly understood [ 1, 5].
Exploratory research has suggested that indicators used for global monitoring purposes can play a role in national policy-making, however, the mechanisms through which this occurs are poorly understood.
The general principles by which this occurs are well understood [ 30]: A number of maternal mRNAs become localised at the anterior and posterior pole of the embryo during egg development.
This is a conception of time based on the temporal continuity of past, present and future, 'in' which events occur and are understood as causally connected.
In addition, increased fatty acid synthase expression in prostate cancer correlates with poor prognosis, although the mechanism(s) by which this occurs are not completely understood.
