Three lectures introduce cone snail venoms: How cone snail venoms have been used to understand the nervous system; how the components of the venom have led to the development of drugs.

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A recent release from the Agency for Toxic Substances and Disease Registry, an agency of the US Department of Health and Human Services, lists the top twenty hazardous substances to the public. Each substance's page answers what it is, what happens when it enters the environment, how the public may be exposed, how it could affect your health, and more. For example, arsenic, which was found to be...

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