<prompt> On electron microscopy amyloid characteristically exhibitsBeta-pleated sheetHyaline globules7.5-10 nm fibrils20-25 nm fibrils  <response>: Physical nature of Amyloid Electron microscopy Non-branching fibrils of indefinite length 7.5 to10 nm in diameter X-ray crystallography IR spectroscopy Cross -b-pleated sheet conformation HE Amorphous, eosinophilic, extracellular substance 