21.   Before the discovery of the black boxes, frustrated investigators had said they were no closer to finding a cause of the second worst airline disaster in American history.

22.   Blood samples drawn from the crew before, during and after this mission may help find the causes.

23.   Both those earlier studies found that there was a group of Gulf War veterans suffering from a variety of symptoms, but could find no cause.

24.   A committee of the state licensing agency for chiropractors has found cause for complaints that Douze influenced a relationship for financial gain and failed to keep adequate financial records.

25.   A team of outside experts headed by Dr. Joshua Lederberg, a Nobel laureate, could not find a cause for their ailments.

26.   After bashing each other for months, the former rivals found common cause in New Hampshire in their opposition to Buchanan.

27.   After a thorough evaluation, if no obvious cause is found, I have found a short course of corticosteroids will sometimes help.

28.   Both men should find common cause in the pursuit of justice and let this tragic case proceed without them.

29.   But even as some people find new cause to view crows with disgust, these shiny black survivors of urban and suburban sprawl are becoming more popular with scientists.

30.   But even using another measure, his group finds cause for optimism.