These impacts are challenging to tease apart.
For example, a premade food outlet intervention might introduce point-of-purchase information and additional healthy offerings together, making the determination of relative contribution of different strategies, their potential interactions, or even the hypothesised mechanisms of influence, challenging to tease apart.
However, many of these factors are correlated with each other, making it challenging to tease apart their relative impact.
Correlations between the pollutants do, however, make it challenging to tease out the independent contributions to risk of mortality of each pollutant.
There is more than one possible mechanism by which MMPs can regulate mammary gland branching morphogenesis (see Fig. 2); it will therefore be an interesting challenge to tease out which molecular pathway or pathways are involved for which proteinase during this developmental process.
Although an extensive number of studies have documented the neurobiological circuitries mediating the stress response and reward experience, it remains a challenge to tease apart the exact biological systems and pathways that mediate and regulate the psychological building blocks (as described above) underlying resilience.
The challenge is to tease out in time and space the relative impacts of these pressures.
Once correlations between a metabolite and a trait have been observed at a locus, however, the next challenge is to tease apart causal relations from shared environmental effects or confounding.
He did start cooing therapeutically to himself in a moment of weakness on the rope bridge ("come on, come on, look up, don't look down") but to be fair, Fashanu was about to undergo a challenge not designed to tease out his charms: that is wearing "critter pants", a perspex receptacle around his waist, into which was tipped bush cockroaches, stick insects, maggots, crickets and cray fish.
Undoubtedly, the challenge now is to tease apart the intricate circuitry that controls the cellular location of pro-apoptotic-proteins.
In "Magical," which began a run at New York Live Arts on Tuesday as part of Performance Space 122's Coil festival, the director Annie Dorsen and the choreographer Anne Juren have found a smart and playful way to tease and challenge their predecessors.
