27 June 2012 Updated at 14:00 ET
'Smoking vaccine' blocks nicotine in mice brains
James Gallagher
Health and science reporter, BBC News
Researchers believe vaccines may one day help people if they choose to quit.
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Smokers could one day be immunised against nicotine so they gain no pleasure from the habit, according to researchers in the US.
link-
http://www.bbc.co.uk/news/health-18608666