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Understanding how snakes evolved venoms is helping researchers develop their treatments

Understanding how snakes evolved venoms is helping researchers develop their treatments
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Medical experts say lack of research on arrowroot for treating snakebite patients

Medical experts have warned against Facebook posts touting arrowroot as a cure for fatal snakebites. While the plant may relieve pain and swelling, a scientist said there was no evidence it could reduce toxicity. The World Health Organization says the only recognised treatment for snakebites is antivenom medication.

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Researchers demonstrate snake venom evolution for defensive purposes

Credit: The Trustees of the Natural History Museum, London and Callum Mair Researchers from LSTM's Centre for Snakebite Research and Interventions (CSRI) have led an international team investigating the evolutionary origins of a novel defensive trait by snakes - venom spitting - and demonstrated that defensive selection pressures can influence venom composition in snakes in a repeatable manner. In a paper published in the journal Science, the team, which includes authors from the UK, USA, Australia, the Netherlands, Spain, Norway, Brazil and Costa Rica, provide the first example of snake venom evolution being demonstrated to be associated with a role in defence, rather than the wide consensus that venom evolution is driven solely for prey capturing-ability.

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