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In [[biology]], poisons are [[Chemical substance|substances]] that can cause [[death]], injury, or harm to [[organs]], [[Tissue (biology)|tissues]], [[Cell (biology)|cells]], and [[DNA]] usually by chemical reactions or other [[activity (chemistry)|activity]] on the [[molecular]] scale, when an organism is exposed to a sufficient quantity.<ref>[http://www.merriam-webster.com/dictionary/poison "Poison"] at ''Merriam-Webster''. Retrieved December 26th, 2014.</ref>
[[Medicinal]] fields (particularly [[veterinary medicine]]) and [[zoology]] often distinguish poisons from ''[[toxins]]'' and ''[[venoms]]''. Both poisons and venoms are toxins, which are [[toxicant]]s produced by organisms in nature.<ref name=AustralianAcademyOfSciencePoisonvsVenom>{{cite web|title=Poison vs. Venom|work=[[Australian Academy of Science]]|date=3 November 2017 |url=https://www.science.org.au/curious/people-medicine/poison-vs-venom|access-date=17 April 2022}}</ref><ref name="Chippaux Goyffon 2006 pp. 215–20">{{cite journal|last1=Chippaux|first1=JP|last2=Goyffon|first2=M|title=[Venomous and poisonous animals--I. Overview].|journal=Médecine Tropicale|volume=66|issue=3|year=2006|issn=0025-682X|pmid=16924809|pages=215–20|language=fr}}</ref> The difference between venom and poison is the delivery method of the toxin.<ref name=AustralianAcademyOfSciencePoisonvsVenom /> Venoms are toxins that are actively delivered by being injected via a bite or sting through a ''venom apparatus'', such as [[fangs]] or a [[stinger]], in a process called [[envenomation]],<ref name="Gupta">{{cite book|editor-last=Gupta |editor-first=Ramesh C.|title=Reproductive and developmental toxicology|date=24 March 2017 |location=Saint Louis |publisher=Elsevier Science |isbn=978-0-12-804240-3|oclc=980850276|pages=963–972}}</ref> whereas poisons are toxins that are passively delivered by being swallowed, inhaled, or absorbed through the skin. [[Unantidoteable]] refers to toxins that cannot be neutralized by modern medical technology, regardless of their type.<ref name=AustralianAcademyOfSciencePoisonvsVenom />
==Uses==
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