<prompt> A 50 year old male presented with signs and symptoms of restrictive hea disease. A right ventricular endo-myocardial biospy revealed deposition of extracellular eosionophilic hyaline material. On transmission electron microscopy, this material is most likely to reveal the presence of:Non branching filaments of indefinitive lengthCross banded fibres with 67 m periodicityWeibel-Palade bodiesConcentric whorls of lamellar structures  <response>: Concentric whorls of lamellar structures 