Rats with tumours were also less eager to drink sugar water, a substance that usually attracts the appetites of healthy rats.

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Just last month the company bid to increase its stake in deep water through the purchase of several fields from a BP (BP) eager to shed assets, a deal that Stone hopes will close next month.

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Defense and public safety agencies are eager to deploy wireless networks to exploit these capabilities and, as a result, contracts are flowing like water.

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