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2011-01-19 14:09:55

Mutant presenilin is infamous for its role in the most aggressive form of Alzheimer's disease—early-onset familial Alzheimer's—which can strike people as early as their 30s. In their latest study, researchers at the Salk Institute uncovered presenilin's productive side: It helps embryonic motor neurons navigate the maze of chemical cues that pull, push and hem them in on their way to their proper targets.

2009-02-20 12:59:38

A study from the Buck Institute for Age Research offers a revolutionary new model for Alzheimer’s disease (AD), a devastating neurodegenerative disorder which afflicts 24 million people worldwide.


Word of the Day
upstander
  • A person who stands up for something, as contrasted to a bystander who remains inactive.
  • One of the upright handlebars on a traditional Inuit sled.
The word 'upstander' in the first sense here is a play on the word 'bystander' and the idea of 'standing up' for something.