<prompt> The accepted nomenclature of amyloidosis is AX. What stands for A and X:A-Amyloid X protein in the fibrilA- Amyloid X- beta pleated structureA-Amyloid X- helical structureA- Amyloid X -birefringent  <response>: Amyloid diseases are classified according to whether they are systemic or localized, acquired or inherited. The accepted nomenclature is AX A indicates amyloidosis X represents the protein in the fibril. Ref: Harrison, Edition-18, Page-942. 