Arecent study reported by de meyer and others revealed that which is a protein fragment that forms plaques in the brain, was present in the spinal fluid of approximately 75 percent of the individuals with mild cognitive impairment.

The answer is amyloid beta. They clump together and form plaques. The formed plaque can block signals transmitted from one cell to another cell. In addition, the plaque can cause swelling, especially in the area where it is formed. It can also digest the disabled cells. This type of plaque is very common among patients with Alzheimer's Disease.

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