Scientists have created a broadly effective antivenom using the blood of a Wisconsin man who has spent years exposing himself to deadly snakebites from black mambas, taipans, cobras and many others.

He let snakes bite him some 200 times to create a better snakebite antivenom

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He let snakes bite him some 200 times to create a better snakebite antivenom

He let snakes bite him some 200 times to create a better snakebite antivenom