<prompt> Cast is produced due to damage to-NephronTubulePCTDCT  <response>: Ans. is d i.e., DCTUrinary casts o Urinary casts are cylindrical aggregations of paiculate matter that form in the distal convoluted tubule or the collecting duct.o They form precipitation of Tam-Horsfall mucoprotein which is secreted by renal tubule cells and sometimes also by albumin in conditions of proteinuria. 