Home › USC › Title 18 › Chapter 1018 U.S.C. Chapter 10 — BIOLOGICAL WEAPONS§ 175— Prohibitions with respect to biological weapons§ 175a— Requests for military assistance to enforce prohibition in certain emergencies§ 175b— Possession by restricted persons§ 175c— Variola virus§ 176— Seizure, forfeiture, and destruction§ 177— Injunctions§ 178— Definitions