This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
PCT has which type of Aquaporin tubules 
Select and explain. 
A. Aquaporin 1, B. Aquaporin 2, C. Aquaporin 5, D. Aquaporin 9
A: Aquaporin 1
Answer: A: Aquaporin 1 
Explanation: Water is reabsorbed in PCT by Aquaporin 1 water channels (independent of ADH) Ref: Ganong 25th ed/page 680