CFR›Title 21›Chapter I›Part 56›Subpart A ContainsSections 56.101–56.105CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart A—General Provisions Sections 56.101 § 56.101 Scope. 56.102 § 56.102 Definitions. 56.103 § 56.103 Circumstances in which IRB review is required. 56.104 § 56.104 Exemptions from IRB requirement. 56.105 § 56.105 Waiver of IRB requirement. Next B Subpart B—Organization and Personnel