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Science News for May 8, 2000


Ultrasensitive method for the diagnosis of prion diseases (Creutzfeldt-Jakob disease and BSE)

Researchers have developed a novel diagnostic technique to directly detect prions in the cerebrospinal fluid, which is easily accessible for diagnostic purposes. This breakthrough method uses dual-color scanning for intensely fluorescent targets to identify single prion particles with high sensitivity.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateMay 8, 2000

Cowbirds' winning songs reflect brainpower

A study by Cornell researchers found a close correlation between cowbird brain size and its singing ability, which attracts females. The research suggests that visual and sexual selection factors go hand-in-hand in determining mating success among male cowbirds.

SourceCornell University·JournalBehavioral Neuroscience·DateMay 8, 2000

Key DNA enzyme can tolerate more mutations than expected

A new study reveals that a commonly used DNA polymerase can withstand an unprecedented number of mutations without compromising its function. Researchers have identified 8,000 active mutant forms, which may have significant implications for understanding evolution, cancer research, and the development of new biotechnological applications.

SourceUniversity of Washington·JournalProceedings of the National Academy of Sciences·DateMay 8, 2000

Women who have Caesarean or assisted vaginal delivery are more likely to be rehospitalized, UW study says

A University of Washington study reveals that women who have Caesarean or assisted vaginal deliveries are at a higher risk of rehospitalization compared to those who have unassisted vaginal deliveries. The study found significant risks for complications such as uterine infection, postpartum hemorrhage, and cardio-pulmonary conditions.

SourceUniversity of Washington·JournalJAMA·DateMay 8, 2000

Accountability makes for better decisions

A study by Cornell University researchers found that auditors tend to make more objective decisions than salespeople due to their legal liability. However, when salespeople are held accountable for their decisions, their bias is reduced. The study suggests that making decisions based on facts rather than personal biases can lead to bet...

SourceCornell University·JournalManagement Science·DateMay 8, 2000