Light micrograph of amyloidosis in a human kidney medulla showing amyloid stained with Congo red in the wall of small blood vessels. Amyloidosis is caused by abnormal folding of normal soluble proteins leading to clumps of proteins called amyloid deposits (red). The renal tubuli are free of amyloid.

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Photo credit: © JOSE CALVO / SCIENCE PHOTO LIBRARY / Alamy / Afripics
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Keywords: -, abnormal, amyloid, amyloidosis, body, condition, congo, disease, disorder, glomerulus, histopathology, human, kidney, light, lm, medical, medicine, micrograph, microscope, microscopy, pathology, red, unhealthy