Delyth Morgan, chief executive of Breakthrough Breast Cancer, said the study highlighted the need for better tests for breast cancer.

BBC: Breast cancer 'is harder to spot'

This included a quantitative study of the papers, diagnostic tests for undergraduates with older and more recent examination questions, and a poll of teachers.

BBC: A-level row upsets students

Some universities may continue to ask those applying to study medicine, for example, to complete additional tests.

ECONOMIST: Reform is mooted as exam grades seem to rise inexorably

The animals are brought into captivity for medical tests once a year, which allowed the marine biologists to record and study their calls.

BBC: Study finds dolphins mimic calls of social group

More troubling, independent experts said, is that patients who were expected to do the best based on genetic and other tests surprisingly had a worse survival trend 16 months versus 25 months for others in the study.

NPR: Avastin Fails Studies In New Brain Tumor Patients

Read Montague, a neuroscientist at Baylor College of Medicine in Houston, has demonstrated that subjects' brains register a preference for Coke or Pepsi that correlates with the product they choose in blind taste tests. (His study is not funded by the cola giants.) The brain of "Subject P" on the monitor in the Human Neuroimaging Lab, for instance, shows he is a Pepsi lover.

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