This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Haemopoietic stem cells differ from committed progenitor cells in bone marrow in : 
Select and explain. 
A. Elaborate growth factors, B. Alter receptor to protein binding, C. Provide permanent structure, D. Provide long term reconstitution of bone marrow
D: Provide long term reconstitution of bone marrow
Answer: D: Provide long term reconstitution of bone marrow 
Explanation: None