Conversely, nitrotyrosine was undetectable in the cerebral cortex of age-matched control brains.

FORBES: The Lessons Of Failure: What We Can Learn From Bapineuzumab's Blowup

The compound annual growth rate of the orphan drug market between 2001 and 2010 was 25.8 percent, compared with 20.1 percent for a matched control group of non-orphan drugs.

FORBES: Orphan Drugs: 'Rare' Opportunities To Make Money

The researchers compared a group of 105 women who had all suffered recurrent spontaneous miscarriages with a carefully matched control group of 91 postmenopausal women who had never had a miscarriage and who had given birth at least twice.

BBC: Miscarriage gene identified

If total costs fall more than five per cent compared with those of a matched set of control patients, the program allows institutions to keep part of the savings.

NEWYORKER: The Hot Spotters

Instead, Dr Miller studied 32 depressed women who were not in hospital, and matched them with a control group of healthy women.

ECONOMIST: The power of negative thinking

Oakey and Spartacus had been matched for the vacant title by the British Boxing Board of Control after they stripped former champion Peter Oboh of his belt for failing to defend against Oakey at Wembley Arena last month.

BBC: Dominant Oakey crushes Spartacus

That nearly matched the weight of the small clan of big, mostly local shareholders that in effect control Telecom Italia with only 22.5% of its shares.

ECONOMIST: European corporate governance