---
kind: "unit"
title: "7"
title_heading: "Agriculture"
key: "subtB/chIII/part331"
level: "part"
label: "Part 331"
heading: "Possession, Use, and Transfer of Select Agents and Toxins"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/7/subtB-chIII-part331"
sections_count: 20
---

# Part 331 — Possession, Use, and Transfer of Select Agents and Toxins

Title 7 C.F.R. — Agriculture › Subtitle B — Regulations of the Department of Agriculture › Chapter III — Animal and Plant Health Inspection Service, Department of Agriculture

## Sections

- [§331.1. Definitions.](/cfr/7/331.1.md)
- [§331.2. Purpose and scope.](/cfr/7/331.2.md)
- [§331.3. PPQ select agents and toxins.](/cfr/7/331.3.md)
- [§331.4. Reserved](/cfr/7/331.4.md)
- [§331.5. Exemptions.](/cfr/7/331.5.md)
- [§331.6. Reserved](/cfr/7/331.6.md)
- [§331.7. Registration and related security risk assessments.](/cfr/7/331.7.md)
- [§331.8. Denial, revocation, or suspension of registration.](/cfr/7/331.8.md)
- [§331.9. Responsible official.](/cfr/7/331.9.md)
- [§331.10. Restricting access to select agents and toxins; security risk assessments.](/cfr/7/331.10.md)
- [§331.11. Security.](/cfr/7/331.11.md)
- [§331.12. Biocontainment.](/cfr/7/331.12.md)
- [§331.13. Restricted experiments.](/cfr/7/331.13.md)
- [§331.14. Incident response. 5](/cfr/7/331.14.md)
- [§331.15. Training.](/cfr/7/331.15.md)
- [§331.16. Transfers.](/cfr/7/331.16.md)
- [§331.17. Records.](/cfr/7/331.17.md)
- [§331.18. Inspections.](/cfr/7/331.18.md)
- [§331.19. Notification of theft, loss, or release.](/cfr/7/331.19.md)
- [§331.20. Administrative review.](/cfr/7/331.20.md)