Are We on the Cusp of a Big Alzheimer's Disease Breakthrough?

Are We on the Cusp of a Big Alzheimer's Disease Breakthrough?

Source: 
Motley Fool
snippet: 

Drugmakers' dustbins are filled with failed attempts to slow the progression of Alzheimer's disease, yet drug developers, including Biogen (NASDAQ:BIIB), remain undaunted in their pursuit of new treatments. Recently, Biogen reported data from a midstage trial that suggests it could be rewarded for its perseverance.