<prompt> Which of these is characteristic of amyloidosis-Beta pleated, metachromosis, PAS veCongophilic, beta pleated, PAS veBeta pleated, fibrillary, congophilicAlpha pleated, small fibrils  <response>: Robbins and Cotran pathologic basis of disease South Asia edition. by electron microscopy all types amyloid consist of continuous non branching fibrills.X Ray crystallography and infrared spectroscopy demonstrate a characteristic cross-beta-pleated shear conformation .this conformation is responsible for distinctive Congo red staining and birefringence of amyloid. 