<prompt> Most specific marker for myeloid series isCD 34CD 45CD 99CD 117  <response>: The markers for myeloid series are CD13, CD33, CD 11b, CD15, CD117 and cMPO. c MPO is the most lineage specific marker amongst these. Regarding other options, CD 34 - Myeloid and lymphoid blasts, stem cells, CD 45 - Leukocyte common antigen nonerythroid hematopoietic cells, CD 99 - Ewings sarcomaprimitive neuroectodermal cells. 