This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Anatomy
Most specific marker for myeloid series is: 
Select and explain. 
A. CD34, B. CD45, C. CD99, D. CD117
D: CD117
Answer: D: CD117 
Explanation: As per Wintrobes the marker for myeloud series CD13,CD33,CD11b,CD15,CD117 and cMPO. Regarding other options CD 34 -myeloid and lymphoid blasts,stem cells CD45 -leucocyte common antigen CD 99- Ewings sarcoma.( ref wintrobes 11th /4145)