<prompt> A 43 year-old woman presents with several year history of progressive abdominal colic and constipation. Colonic biopsy stained with Congo Red and polarizing microscopy reveals the following appearance. This is due to which of the following protein propeies?Ability to bind to oxygenBeta pleated sheet teiary structureElectrophoretic mobilityHydroxyproline content  <response>: Staining characteristics of amyloid Stain on gross HE Metachromatic stains Rosaniline dyes Congo red polarised light Flourescent stains Immunohistochemistry Non-specific stains Staining characteristics of amyloid Congo red polarised light For amyloid of all types Used on both gross microscopy Pink red color Stained section in polarised light - apple green birefringence dt ss pleated sheet 