---
kind: "unit"
title: "21"
title_heading: "Food and Drugs"
key: "ch4/schIII"
level: "subchapter"
label: "Subchapter III"
heading: "Prevention of Introduction and Spread of Contagion"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/21/ch4-schIII"
sections_count: 16
---

# Subchapter III — Prevention of Introduction and Spread of Contagion

Title 21 — Food and Drugs › Chapter 4 — Animals, Meats, and Meat and Dairy Products

## Sections

- [§112. Repealed.](/usc/21/112.md)
- [§112a. Omitted](/usc/21/112a.md)
- [§113. Repealed.](/usc/21/113.md)
- [§113a. Establishment of research laboratories for foot-and-mouth disease and other animal diseases; research contracts; employment of technicians and scientists; appropriations](/usc/21/113a.md)
- [§114...114d–1. Repealed.](/usc/21/114...114d-1.md)
- [§114d–2...114d–6. Repealed.](/usc/21/114d-2...114d-6.md)
- [§114e...114h. Repealed.](/usc/21/114e...114h.md)
- [§114i. Pseudorabies eradication](/usc/21/114i.md)
- [§115...128. Repealed.](/usc/21/115...128.md)
- [§129. Omitted](/usc/21/129.md)
- [§129a...131. Repealed.](/usc/21/129a...131.md)
- [§132. Transferred](/usc/21/132.md)
- [§133. Repealed.](/usc/21/133.md)
- [§134...135b. Repealed.](/usc/21/134...135b.md)
- [§136. Additional inspection services](/usc/21/136.md)
- [§136a. Collection of fees for inspection services](/usc/21/136a.md)