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Testing, testing

MRSA—drug-resistant staph—appears yellow in this micrograph

Image: NIAID

A preliminary study found that a simple blood test may detect the earliest signs of pancreatic cancer. Eighty-one percent of blood samples from 42 people with early-stage cancer contained two genes, BNC1 and ADAMTS1; those genes were not detected in blood from people without pancreatic cancer. Learn more.

Alzheimer's disease may begin wrecking the brain a decade or more before the onset of symptoms, negating early treatment. Now the baseline ratios of the proteins phosphorylated tau and beta amyloid in cerebrospinal fluid have been found to predict mild cognitive impairment more than five years before the onset of other Alzheimer's symptoms. Learn more.

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