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Regulations last checked for updates: Oct 10, 2025
Title 21 - Food and Drugs last revised: Sep 25, 2025
All Titles
Title 21
Chapter I
Part 156
Subpart A - Subpart A—General Provisions
§ 156.3 - Definitions.
authority:
21 U.S.C. 321
,
341
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343
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348
,
371
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