Most specific marker for myeloid series is:: (A) CD34, (B) CD45, (C) CD99, (D) CD117
Answer is D. 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)