SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Snake venom research. Herpetologist Alexander Pisarev extracting venom from a viper. Samples of snake venom are studied to assess the venom's potency. The venom is also used to produce antivenom to treat bites by that particular snake. Photographed at the Siberian Serpentarium, Novosibirsk, Russia.
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