For the treatment of Alzheimer's drug test failure

The two drug U.S companies, says that was developed for the treatment of Alzheimer disease in its final stages of testing drugs has failed.
Therefore they are doing more work stoped.
Drug called bypanyuz mib made by Pfizer and Johnson & Johnson. The purpose was to prevent clots in the brain-mail or bacteria. The two companies announced on 23th July had failed the drug test.
In this experiment were tested on patients with Alzheimer's disease have a higher risk of being genetically. 
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