Researchers may have found the key to creating the ultimate snake antivenom, and all it took was someone getting bitten 200 times.

Tim Friede might be the world's most snakebit person—and his antibodies could hold the key to a truly universal snake antivenom.

Scientists in the United States have created a new snake antivenom using the blood of a man who deliberately built up immunity to snakebites by injecting himself with many different kinds of venom more than 800 times over 18 years.