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      Anti-smoking Vaccine

      People may one day be able to get a shot to resist smoking.

      Scientists may have developed a vaccine against nicotine addiction.

      So far, they've only tried it in lab mice.

      The vaccine uses the shell of a harmless virus to carry genetic instructions into cells to make an antibody against nicotine.

      When cells are "infected" by the virus, they're tricked into churning out a protein that blocks nicotine's biological effects.

      This time, researchers may have found a way to get the body to keep making more of the antibodies.

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