41.   Dutch researchers report on the results of a multicentre trial that finds that long-term treatment is probably best.

42.   Ecstasy, the popular drug often associated with the club scene, may harm the memories of people who use it regularly, researchers are reporting.

43.   Dutch researchers report the results of a trial that compared conventional chemotherapy with the new high-dose regimen.

44.   Earlier this year researchers reported that people with perfect pitch have in their left hemispheres highly developed structures associated with musical perception.

45.   Finnish researchers report they have identified a particular brain abnormality in patients with schizophrenia that may explain the cause of the disease.

46.   For-profit HMOs are more likely than nonprofit HMOs to skimp on preventive care to maximize profits, Harvard University researchers reported in a study.

47.   For example, some researchers have reported finding meteorites that contain amino acids, which are the building blocks of proteins, essential for earthly life.

48.   Genetically engineered crops, which entered commercial production in the United States last year, can pass their traits to noxious weeds with stunning speed, researchers reported Wednesday.

49.   German researchers report that conductors are significantly better at localizing sources of sound.

50.   Harvard researchers reported Friday that a new vaccine combination, which suppresses an AIDS-like virus without wiping it out, has worked in rhesus monkeys.