Researchers from Tel Aviv University believe they may have uncovered the cause of Alzheimer’s disease. They injected the protein Tomosyn into the brains of mice, and produced Alzheimer-like syndromes. Tomosyn exists in the brain but excess damages inter-cell communication.
http://www.timesofisrael.com/israeli-scientists-may-be-closing-in-on-cause-of-alzheimers/