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: Medicine
Human stem cells express: 
Select and explain. 
A. CD14, B. CD8, C. CD34, D. CD10
C: CD34
Answer: C: CD34 
Explanation: Human stem cells express C-kit, C-mpl and usually cluster of differentiation determinant — 34 (CD34).