A new antivenom relies on antibodies from the blood of Tim Friede, who immunized himself against snakebites by injecting increasing doses of venom into his body.
A man let snakes bite him 202 times. His blood helped create a new antivenom

A new antivenom relies on antibodies from the blood of Tim Friede, who immunized himself against snakebites by injecting increasing doses of venom into his body.