A new four-part series in which Dr Michael O'Donnell explores the role animals play in a variety of medical experiments. 1: The Serpent's Tale. Venomous snakes are known and feared fortheirpowerto kill, yet they also have the powerto heal, as many patients who have taken heart or circulatory drugs based on their venoms can testify. This programme explores the extraordinary power of snake venom in nature, folklore and modern medicine.
Producer Jeremy Grange. Repeated tomorrow 4.30pm