Rising stock prices have the potential to stimulate household spending due to the wealth effect, and that could raise the likelihood of economic recovery.

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Critics question the programme's potential to stimulate the economy, when the increased cashflow of borrowers will come at the expense of the investors who own the mortgages.

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It can lend credibility, stimulate buzz and generally put a company on the radar of potential customers and industry influencers.

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Stem cell therapies have the potential to surpass monoclonal antibodies because they use cells doing what cells normally do to stimulate the body to do what it normally does.

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