The following video is from today's MarketFoolery podcast, in which host Chris Hill, along with Charly Travers, Jason Moser, and Joe Magyer, discuss the latest business news. Shares of Elan, Pfizer, and Johnson & Johnson all fell today after the experimental treatment for Alzheimer's disease the three companies were working together on failed its first large clinical trial. While the bigger companies fell only slightly, shares of Elan finished the day down nearly 15%. In this segment, the guys analyze the opportunity Alzheimer's disease presents for companies in the biotechnology and pharmaceutical industries. They also share why, despite the hit its stock took today, Elan is still a company investors should keep their eyes on.

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Chris Hill owns shares of Johnson & Johnson and Pfizer. The Motley Fool owns shares of Johnson & Johnson. Motley Fool newsletter services have recommended buying shares of Johnson & Johnson and Pfizer and creating a diagonal call position in Johnson & Johnson. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. Try any of our Foolish newsletter services free for 30 days. The Motley Fool has a disclosure policy.