大象传媒

Jim Harrison is the director at the Kentucky Reptile Zoo. He extracts venom to help scientists with research into cancer and Alzheimer's, and he performs between 600 and 1000 extractions a week. He deals with snakes like king cobras and lance-headed vipers, and has been bitten nine times.

Photo: Venom being extracted from a rattlesnake, Credit: Kentucky Reptile Zoo