Versions of 50 USC 1520a - Restrictions on use of human subjects for testing of chemical or biological agents on LawServer 2024 50 USC 1520a – Restrictions on use of human subjects for testing of chemical or biological agents 2023 50 USC 1520a – Restrictions on use of human subjects for testing of chemical or biological agents 2022 50 USC 1520a – Restrictions on use of human subjects for testing of chemical or biological agents 2021 50 USC 1520a – Restrictions on use of human subjects for testing of chemical or biological agents 2020 50 USC 1520a – Restrictions on use of human subjects for testing of chemical or biological agents 2018 50 USC 1520a – Restrictions on use of human subjects for testing of chemical or biological agents 2017 50 USC 1520a – Restrictions on use of human subjects for testing of chemical or biological agents 2015 50 USC 1520a – Restrictions on use of human subjects for testing of chemical or biological agents 2014 50 USC 1520a – Restrictions on use of human subjects for testing of chemical or biological agents