Environmental Protection Agency
Environmental Protection Agency: The US government agency founded to “protect human health and to safeguard the natural environment–air, water, and land–upon which life depends.” The Environmental Protection Agency is known as the EPA.
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- Environmental tobacco smoke
Environmental tobacco smoke: Abbreviated ETS. Secondhand smoke. Medically reviewed by Martin Zipser, MD; Board Certified: Surgery
- Environmental toxicology
Environmental toxicology: The toxicity and toxicology of environmental pollutants in air, dust, sediment, soil and water, and natural toxins in the environment.
- Enzootic
Enzootic: Endemic in animals. An enzootic disease is constantly present in an animal population, but usually only affects a small number of animals at any one time.
- Enzyme
Enzyme: Proteins that speeds up the rate of a chemical reaction in a living organism. An enzyme acts as catalyst for specific chemical reactions, converting a specific set of reactants (called substrates) into specific products. Without enzymes, life as we know it would not exist.
- Enzyme defect
Enzyme defect: A disorder resulting from a deficiency (or functional abnormality) of an enzyme. For example, newborns are routinely screened for certain enzyme defects, such as phenylketonuria (PKU) and galactosemia.