Highly persistent nerve agent VX is capable of lingering in the environment for several weeks to months.
Sarin (GB), soman (GD), tabun (GA), and VX are the four primary nerve agents. These substances have been produced by humans for use in chemical warfare. Several countries, including the United States, are known to have these substances in their military stockpiles.
Inhalation, skin contact, and eye contact are the most likely modes of exposure. Vesicants are extremely reactive substances that react with proteins, DNA, and other biological components to cause cellular changes as soon as they are exposed.
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