1. A new variant of Creutzfeldt-Jakob disease in the UK.;Will;Lancet,1996
2. US Food and Drug Administration. FDA encourages reintroduction of bovine-sourced heparin [cited 2019 Dec 15]. https://www.fda.gov/Drugs/DevelopmentApprovalProcess/Manufacturing/ucm600976.htm
3. Diversifying the global heparin supply chain: reintroduction of bovine heparin in the United States?;Keire;Biopharm Int,2015
4. World Organization for Animal Health. BSE situation in the world and annual incidence rate (1989–31/12/2016) [cited 2019 Dec 18]. https://www.oie.int/en/animal-health-in-the-world/bse-situation-in-the-world-and-annual-incidence-rate
5. A heparin purification process removes spiked transmissible spongiform encephalopathy agent.;Bett;AAPS J,2017