Examlex
In which of the following areas does the United States significantly limit imports?
Vitamin C
An essential nutrient that acts as an antioxidant, supports the immune system, and is necessary for the synthesis of collagen.
Pulp Cavity
The innermost part of a tooth, containing nerves, blood vessels, and connective tissue.
Dentin
A calcified tissue that forms the main body of a tooth beneath the enamel and surrounds the tooth pulp.
Cementum
A calcified tissue that covers the roots of teeth and helps anchor them into the jawbone.
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