'Unparalleled' snake antivenom made from man bitten 200 times.
The 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 snake anyone has been bitten by.
Antivenom is currently made by injecting small doses of snake venom into animals, such as horses.
But venom and antivenom have to be closely matched because the toxins in a venomous bite vary from one species to another.
In experiments on mice, the cocktail meant the animals survived fatal doses from 13 of the 19 species of venomous snake. »