41.   The new test can detect the presence of virus in the body a few days sooner than the antibody test can, and so can help screen blood donations.

42.   The newscast alleged that the staffs of these labs had failed to detect the presence of potential cancer cells on a disturbing number of slides.

43.   The test detects the presence of Heliobacter Pylori, a bacteria believed to be the primary cause of peptic ulcers, raw areas in the gastrointestinal tract.

44.   The test detects the presence of Heliobacter Pylori, a bacteria believed to be the primary cause of peptic ulcers, holes in the lining of the stomach.

45.   The test detects the presence of the disease by spotting the antibodies that our immune systems create to fight AIDS.

46.   The test detects the presence of the bacterium Helicobacter pylori, or H. pylori.

47.   The WiFi card automatically detects the presence of a wireless network and displays a log-on window.

48.   These firms will build circuitry into their devices that detect the presence of a digital watermark.

49.   Toxicological tests to detect the presence of drugs or alcohol were performed on the conductors aboard both trains, but the results were not immediately disclosed.