Renal Amyloidosis. Light micrograph (LM) of a human kidney showing amyloid deposits (yellow) in glomeruli. Its deposition causes disruption of tissues, loss of functioning cells and if arteries are involved, a reduction in blood supply. It is associated with diseases such as rheumatoid arthritis & some cancers. The kidneys are the organs most commonly involved in amyloidosis. Renal failure caused by widespread amyloidosis accounts for the majority of deaths from the disease. Magnification: 250 when printed 10cm wide. Human tissue.