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Cream Glossary » V
The degree to which a study
or study instrument measures what it is intended to measure.
Normally refers to correctness or truthfulness in regard
to a study's conclusion.
Vitamins are organic compounds
that are nutritionally necessary in small amounts to control
metabolic processes and cannot be synthesized by the body.
Vitamins are typically classified by their solubility, which
to some degree determines their stability; occurrence in
foodstuffs; distribution in body fluids, and even for tissue