Poisons
A poison is any substance that causes harm to a living being. This can result from contact with the body e.g. a caustic, or following absorption into the body. Absorption can occur following ingestion, by passage through the skin or mucous membranes, by inhalation or by injection. A foetus can be poisoned by a substance crossing the placenta. Almost any substance can act as a poison if a sufficiently large dose is absorbed.
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