In other cases, the evaluation uses the variations in the exposition to a certain policy that originate from an exogenous source that is not correlated to the outcome of interest (instrumental variables or natural experiment approach).
For that reason, the different frequencies of these variants could be a sign of recent local adaptation events that have favored certain haplotypes over others in response to specific environmental conditions, related for example to dietary restriction or exposition to pathogens.
Although these differences in lipid composition might reflect their previous exposition to hydrocarbons, this pattern did not last longer most likely due to depuration of hydrocarbons stored in the tissues or by the development of certain tolerance to PAHs.
It did not contain contextual prerequisites, a sense of wonder or perplexity, and I left exposition to HTML tags.
Diagnostic x-rays are the greatest source of exposition to ionizing radiation of the population worldwide.
Due to permanent exposition to different weather conditions, they change their form in time.
Device degradation studies revealed a solar cell performance reduction upon sample exposition to ambient atmosphere.
Max from "The L Word" was my first exposition to transmen and the concept of transitioning.
Chitosan nanoparticles were sterilized by direct exposition to UV radiation during 20 minutes.
Cardiological diagnosis and interventions such as catheter examinations regularly involve exposition to iodine-containing contrast media.
