Neurofibrillary tangles found in the neurons of brains affected by Alzheimer's disease contain
A. synuclein
B. amylin
C. calcitonin
D. tau protein
E. glial fibrillary acidic protein (GFAP)
D
Tau protein, a microtubule binding protein, is a constant component of the neurofibrillary tangles that accumulate in the cytoplasm of neurons in Alzheimer's disease. Synuclein is found in Lewy bodies in Parkinson's disease. Amylin is a component of amyloid in the islets of Langerhans showing amyloidosis. Calcitonin is a product of C cells of the thyroid but is also deposited in the amyloid of the stroma of medullary carcinoma of the thyroid. GFAP is a normal component of the cytoskeleton of glial cells and is not found in neurons.
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Which of the following is true about the 2008 Beijing Olympiad?
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A) diaphysis. B) condyle. C) epiphyseal plate. D) osteoblasts.