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Will a fluoride mouthwash used after brushing reduce cavities? Twenty sets of twins were used to investigate this question. One member of each set of twins used the mouthwash after brushing, and the other did not. After six months, the difference in the number of cavities for those using the mouthwash was compared with the number of cavities for those who did not use the mouthwash. This experiment uses:
Relevant Field
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Work-for-Hire
A legal term in copyright law that defines a work created by an employee as part of their job, or certain commissioned works where the rights belong to the employer or commissioning party.
Copyright
A form of intellectual property law that grants creators exclusive rights to their original works of authorship, including literary, dramatic, musical, and artistic works.
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The national government of a federated state, which shares sovereignty with its constituent subnational governments.
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