'Unparalleled' snake antivenom made from man bitten 200 times

Getty ImagesA black mamba is arguably the world's deadliest snakeThe blood of a US man who deliberately injected himself with snake venom for nearly two decades has led to an "unparalleled" antivenom, say scientists.Antibodies found in Tim Friede's blood have been shown to protect against fatal doses from a wide range of species in animal tests. Current therapies have to match the specific species of venomous…