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A descriptive or analytic study of risk factors or disease determinants in populations. Most epidemiologic and some genetic studies fit within this…

The Field Spaniel is a moderately-sized spaniel, slightly heavier and longer in body than the Cocker. The nose is large, with very…

The extent of an area that is visible.

An analytical technique used to separate a multi-component sample by applying a retarding force or gradient to a sample in a solvent…

A transistor designed so that current through it is controlled by a variable electric field.

The region in which a particular type of force can be observed, often viewed as a space which was modified by the…