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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 21
Chapter I
Part 556 -
Subpart A [§ 556.1 - § 556.5] - Subpart A—General Provisions
Subpart B [§ 556.34 - § 556.770] - Subpart B—Specific Tolerances for Residues of Approved and Conditionally Approved New Animal Drugs
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