Light micrograph of human brain tissue in Alzheimer's disease,showing a senile plaque (circular lesion at left),a characteristic histological feature of the disease. Alzheimer's disease is a form of progressive dementia; the brain is smaller than normal,with degenerative changes affecting the frontal and temporal lobes. Senile plaques are tangled masses of filaments & granules,often centred around an area of dark- staining amyloid protein. The main other feature of Alzheimer's disease is the formation of neurofibrillary tangles,masses of thickened filaments in the cytoplasm of neurons (nerve cells). Magnification: x130 at 35mm size | |
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Crédit: | Science Photo Library |
Taille de l’image : | 5348 px × 3521 px |
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