---
kind: "unit"
title: "42"
title_heading: "The Public Health and Welfare"
key: "ch6A/schXXI"
level: "subchapter"
label: "Subchapter XXI"
heading: "Research with Respect to Acquired Immune Deficiency Syndrome"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/42/ch6A-schXXI"
sections_count: 23
---

# Subchapter XXI — Research with Respect to Acquired Immune Deficiency Syndrome

Title 42 — The Public Health and Welfare › Chapter 6A — Public Health Service

## Contents

- [Part A — Administration of Research Programs](/usc/42/ch6A-schXXI-ptA.md)
- [Part B — Research Authority](/usc/42/ch6A-schXXI-ptB.md)
- [Part C — Research Training](/usc/42/ch6A-schXXI-ptC.md)
- [Part D — Office of AIDS Research](/usc/42/ch6A-schXXI-ptD.md)
- [Part E — General Provisions](/usc/42/ch6A-schXXI-ptE.md)