This fascinating talk looks at the medical use of chemical compounds found in the venom of a range of species eg arthropods, reptiles, molluscs et al. Research has discovered potential applications in the treatment of Type 2 Diabetes, cancers, anaesthetics, antibiotics etc youtu.be/SDLbFowy3A0?...
A key point highlighted in the lecture is the fact that there are millions of potentially useful chemicals in venom; researchers are only scratching the surface with less than 1% of the compounds in question evaluated. Global biodiversity is (amongst many other things) our natural medicine chest.