In the first set of analysis, the team found 182 species of bacteria, but at the repeated test a further 65 showed up.

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In another experiment, the team repeated the test with 20 children between the ages of two and seven.

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But as other motoring journals repeated the test and came up with the same results, more orders dried up.

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Wood would not comment on reports that North Korea is moving missile equipment for another possible long-range missile test but repeated that missile launches by Pyongyang constitute a violation of existing U.N. resolutions.

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Tensions have remained high following Pyongyang's launch of a long-range missile last December, followed by a nuclear test in February and repeated threats of war in recent months.

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The tests were repeated on rats, and again in test tubes using tissue taken by biopsy from patients undergoing unrelated medical procedures.

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Flower was caught at third slip for 13, Murray Goodwin was yorked by Ravi Pushpakumara, who repeated the feat by dismissing Alistair Campbell for his 50th Test wicket.

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Other issues she will have to deal with include the implementation of the teachers' workload agreement for England and Wales, the growth of specialist schools and city academies, plans for optional extended school hours - and the government's repeated failure to meet its targets for England's test and exam performance.

BBC: NEWS | UK | Education | What's in Ruth Kelly's in-tray?