human_reference_atlas has characterizing marker set has marker component CAVIN2 PDLIM1 FCER1A FCGR2B GATA2 GP1BA ITGA2B ITGB3 PF4 PLEK megakaryocyte progenitor cell The earliest cytologically identifiable precursor in the thrombocytic series. This cell is capable of endomitosis and lacks expression of hematopoieitic lineage markers (lin-negative). BTO:0001164 early megakaryocyte megacaryocyte progenitor cell megacaryoblast MkP colony-forming unit-megakaryocyte CT MESH:D055016 promegakaryocyte megakaryocytic progenitor cell CL:0000553 early Megakaryocyte Meg-CFC FMA:84235 CFU-Meg megakaryoblast CALOHA:TS-0610 Lineage negative is described here as CD2-negative, CD3-negative, CD4-negative, CD5-negative, CD8a-negative, CD14-negative, CD19-negative, CD20-negative, CD56-negative, Ly6g-negative, and Ter119-negative. promegacaryocyte megakaryocyte myeloid lineage restricted progenitor cell Homo sapiens sequence collection bone marrow