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Published online 25 March 2009 | Nature | doi:10.1038/news.2009.188

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Porton Down veterans not at greater health risk

Military personnel exposed to chemical warfare agents should be "reassured".

The first ever studies of veterans exposed to chemical warfare agents in controversial experiments at the UK Ministry of Defence (MoD) Porton Down laboratory has found little evidence that they suffered any long-term health effects, despite a small increase in mortality in the test group.

Nearly 500 different chemicals, including nerve agents such as sarin and blistering agents such as sulphur mustard (mustard gas), were tested on military personnel at the Porton Down laboratory near Salisbury between 1941 and 1989.

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