There’s an Ancient Connection Between Our Saliva and Snake Venom – Gizmodo Australia

Humans and other mammals have the same genetic foundations for developing oral venom that snakes have, according to a paper published today in the Proceedings of the U.S. National Academy of Sciences.
This connection was discovered by a research team looking at venom-producing tissue from 30 habus, a pit viper from East Asia. The researchers were scrutinising the animals genes to understand which had a hand in expressing the complex proteins that make up the snakes venom.
The toxins in snake venom…

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