Jameson   s Mamba, Cameroon

Photograph by Mattias Klum, National Geographic

Jameson's mambas, like the one here in Cameroon, have hollow fangs that deliver toxins that can lead to respiratory paralysis and a person's death within hours. But scientists are working to unlock the medical potential of venom, and soon the toxins from snakes like the mamba may combat heart disease or other ailments.

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