Physiology Kidneys and Body Fluids 219eba4a Collection duct has which cells A Principal and intercalated B Parietal and oxyntic cells C Lacis cells D Podocytes High-Yield Explanation Ans. (a) Principal and intercalated(Ref: Ganong, 25th ed/p.672)Colleting duct is made up of two types of cell: principal cells (P cells) and intercalated cells (I cells)