Blood of man who subjected himself to 200 snakebites used for antivenom

Scientists have used the blood of a truck mechanic to create a potential antivenom against some of the world’s most dangerous snakes.
Beginning in 2000, Tim Friede spent the next 18 years slowly building up a tolerance to the venom of a range of snakes by injecting himself with over 800 diluted venom solutions and as well as deliberately subjecting himself to 200 bites from live snakes.
He ended up posting videos to YouTube, including one where he gets a black mamba out of a drawer to bite his arm before turning to the camera to say: “Good morning, my name is Tim Friede, and that was my 67th mamba bite in 10 years.”
His videos attracted thousands of viewers.