31.   A laboratory test revealed that the packages contained a combination of lime and soil.

32.   A laboratory test revealed the following.

33.   A police official said that preliminary laboratory tests conducted on some of the heroin that was recovered indicated that it was not tainted.

34.   A senior government official said that laboratory tests had not matched the anthrax samples in the two letters, but expected they would prove to be the same.

35.   According to news reports, this new evidence came from laboratory tests on clothes the parents wore the night of the murder.

36.   Additional days might pass before an infected individual seeks medical attention, laboratory tests are performed, and an accurate diagnosis is made.

37.   After studying laboratory tests, I advised him that treatment was not clearly required at this stage of the illness.

38.   But a new laboratory test has raised some doubt about claims that two students were drunk, said a justice of the peace, George Boyett.

39.   But because the earliest stage of smallpox can resemble rashes caused by many other diseases besides chickenpox, identification can be difficult without laboratory tests.

40.   But first scientists will have to develop laboratory tests to assay nef, Deacon said.