Alzheimer's Disease, Healthy vs. Severe

21st century ad alzheimer disease alzheimers disease alzheimers disease alzheimers alzheimers art artist concept brain cerebral cortex chronic neurodegenerative disease chronic neuro degenerative disease compare computer graphic concept damage dementia disease disorder disorders of the nervous system enlarged enthorhinal cortex epromo06042018c extreme graphic healthy hippocampus human labeled neurodegenerative neuro degenerative neurological neurology science severe shrinkage unhealthy ventricle