<prompt> On electron microscopy amyloid characteristically exhibits:B-plated sheetsHyaline globules7.5-10 nm fibrils20-25 nm fibrils  <response>: Propeies of Amyloid Proteins: -Physical Nature of Amyloid: Electron microscopy-- Continuous, non-branching fibrils with a diameter of approximately 7.5 to 10 nm. X-ray crystallography and infrared spectroscopy-- Cross-b-pleated sheet conformation. This conformation is responsible for the distinctive Congo red staining and birefringence of amyloid. -Chemical Nature of Amyloid The AL amyloid light chain-excess of the light chains will deposit outside the cell in the form of Amyloid protein.It is seen in Multiple Myeloma patients. The AA amyloid-associated type of amyloid fibril protein is derived from unique non-Ig protein made by the liver. b-amyloid protein Ab-Seen in Alzheimer disease.deposition of Ab plaque in the brain,causing damage to the coical neurons lowering the acetylcholine levels ,leading to Memory. 