41.   But research by Johns Hopkins, the University of Maryland and universities in Peru suggests that the warm water of El Nino created a friendly atmosphere for the bacteria.

42.   But research by the association had not found a decline in interest, she said.

43.   But research by Thomas Helbling and Robert Wescott, economists at the International Monetary Fund, provides a benchmark.

44.   But research by Paul Lawton and recent recollections by at least one survivor indicate a German torpedo sank the ship.

45.   But research by the Star-Telegram found the answer.

46.   But there is a huge body of research by labor economists suggesting that employees as a group bear the costs.

47.   But the research by Hurt and his colleagues was the largest trial to date of any antidepressant for that purpose.

48.   Castrillon cited research by Philip Jenkins, a professor of religious studies at Pennsylvania State University, who argues that the problem is relatively minor.

49.   Conflicting test results could impact research by other government agencies.

50.   Contributing research by Joni Zecola.