A select timeline of research, discovery, salesmanship and spending. Said Zaven Khachaturian, a former director of Alzheimer's research at the National Institute on Aging: 'Every major pharmaceutical company put money into the amyloid idea, and they all failed because the idea was flawed ... It became gradually an infallible belief system ... that's not very healthy for science when scientists ... accept an idea as infallible. That's when you run into problems.'
MAIN STORY Why there's no cure for Alzheimer's