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'Rogue' Protein Spread Key to Alzheimer's

Discovery casts light on tangles found in brains of disease sufferers

(Newser) - A protein linked to Alzheimer’s can run amok in the brain, affecting healthy tissue, scientists have found. All nerve cells contain the tau protein, but a “rogue form” can lead to protein clumps in cells, called neurofibrillary tangles, that are believed to play a major role in Alzheimer’... More »

Happiness Spreads Like the Flu

(Newser) - Happiness is contagious and spreads through social networks in much the same way the flu does, says a landmark new study that followed the fate of 4,700 people over 20 years. The research shows that a person's happiness can lift the mood of loved ones, neighbors, and even strangers... More »

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