healthy cell and neurons with alzheimer`s disease. tau hypothesi

affected alzheime alzheimer alzheimers amyloid astrocytes atrophy biological brain breakdown cell cells central change death dementia disease disintegrate education functions head healthy human hypothesis infographic loss medical medicine memory microglia microtubules nerve nervous neural neurodegenerative neurofibrillary neurology neuron neuronal neurons plaque protein research science senile system tangles tau