Another key role traders play these days is keeping counterfeit components from reaching end customers.
Personal borrowing plays a key role in how many small business people finance their companies.
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Food prices played a key role, slowing to 5.3% year over year from 6.2% in October.
The SARS outbreak has highlighted the key role Internet can play in a global health emergency.
Naseer played the key role in sending four other Birmingham men to Pakistan to receive training.
He also played a key role in his country's triumph at the 2009 European Under-17 Championship.
As such, they play a key role in our ability to socialize and empathize with others.
And he explained Redknapp played a key role in luring him to Fratton Park.
In this, the United States -- the United Nations will play a key role.
If Marc got Hurd out, he certainly played a key role in bringing Leo in.
For at least a decade, Guinea-Bissau has played a key role in the drug trade.
It is becoming increasingly clear that the ECB is playing a key role, though.
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The Arab League and the UN should play a key role in post-war Iraq.
That's going to be the key role for me over the next couple of years.
His key role in Northern Ireland politics had begun more than a decade before.
The hypocretin system is known to play a key role in controlling sleep and wakefulness.
The plains also play a key role in giving champagne wines their distinctive depth of flavor.
Delta has remained mostly mysterious, but seems to play a key role in heart disease.
Roseman played a key role in luring Chip Kelly away from Oregon to replace Reid.
The institution also plays a key role in the fight against money-laundering and terrorism.
Naseer played a key role in sending four other Birmingham men to Pakistan to receive training.
Universal Aide played a key role through a third party in getting together 28.
These cells produce dopamine - a chemical which plays a key role in movement.
Cairo has mediated between the two sides for years, playing a key role in restarting negotiations.
It involves repositioning and strengthening the information profession to play a key role in global development.
Mr Mujica played a key role in transforming the Tupamaros group into a legitimate political party.
GPs would play a key role in managing the NHS budget under the plans.
However, the researchers also pinpointed the key role of a second protein, called S6K2.
Gen Allen played a key role in countering the Iraq insurgency between 2006 and 2008.
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