41.   Chronicle Food interns Noel Advincula and Margarita Camacho and Chronicle staff writer Tara Duggan performed the tests.

42.   Competition means some equipment makers are paying more attention to performing the tests themselves and to developing less-expensive machines.

43.   Cotton is the director of a Maryland laboratory that performed DNA tests on crucial pieces of evidence.

44.   Countless scientific tests have been performed, a test tunnel has been drilled, and the program has been reviewed constantly by expert panels.

45.   Despite warnings last year that bacteria levels must be monitored at least monthly, no tests had been performed for the last several months, inspectors said.

46.   Dressler performs another test to determine how much mercury vapor is in the mouth.

47.   Dunbar said Brown has agreed to the blood test, but added it was not yet clear when or where the test would be performed.

48.   During his subsequent news conference, Martinez said that his agency would start performing crash tests this winter to look at the effects of crashes between dissimilar vehicles.

49.   Doctors can use a urine or swab sample to perform the test, the company said.

50.   Doctors performed more tests and concluded he was brain dead.