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Key Alzheimer's findings questioned
Conflicting results cloud link to prion protein.
Drug flexes muscle against cancer
Decoy protein helps to fight cancer in mice by stopping muscle breakdown.
Superfast TB test slashes waiting time
Infection with tuberculosis can be diagnosed easily and accurately in less than two hours.
High price to pay for misconduct investigations
A single investigation into research malpractice cost US$525,000.
Physiology: The bones of contention
The skeleton may provide more than just structural support. Alla Katsnelson investigates the rise of bone as a metabolic regulator.
FDA challenges stem-cell clinic
Injunction raises questions over regulation.
Stem-cell work thrown into limbo
US district-court ruling suspends federal funding for research involving human embryonic stem cells.
Biotechnology: Crossing the barrier
Researchers have rallied round a promising molecule for rescuing dying nerves. But getting it into the brain remains a daunting challenge, finds Brian Vastag.
US court suspends research on human embryonic stem cells
Effects of injunction against Obama administration's stem-cell policy still unclear.
Genetics: Pet project
Stymied in the search for genes underlying human neuropsychiatric diseases, some researchers are looking to dogs instead. David Cyranoski meets the geneticist's new best friend.
Kids swap DNA for fairground rides
Researchers' efforts to collect samples at a fair raise ethical questions.
The skin disease that cures itself
Diseased cells have harnessed a cancer-causing mechanism to banish a mutant gene.
E-mails spark ethics row
Spat over health effects of atrazine escalates.
How an 1,800-year-old herbal mix heals the gut
An ancient Chinese medicine might ease side effects of cancer treatments.
Breast cancer protein is finally purified
Isolation of BRCA2 could help understanding of cancer risk and aid drug screening.