41.   The boy was last seen by his mother standing in the doorway of the bus that was used as a lab to test rock samples.

42.   The bullets will be compared to test samples fired from the guns of Kinchen and English.

43.   The laboratory does not know the identity of the students whose samples it tests.

44.   The sample will be tested for authenticity at the Johnson Space Center in Houston.

45.   The samples were tested in an independent lab with the help of the U.S. Department of Agriculture, Hurley said in her statement.

46.   The sample will be tested to determine the level of alcohol in his blood at the time of the accident.

47.   The scientists tested few samples and had results that ranged widely.

48.   The Romanian delegation was informed of the results on Monday, and they requested a B sample be tested.

49.   The three laboratories also tested samples sent from the Centers for Disease Control and Prevention.

50.   The use of blanks while he was testing other samples, he said, helped assure him that there was no contamination from the environment in the laboratory.