hematopoietic stem cell SNOMEDCT:418318001 A stem cell from which all cells of the lymphoid and myeloid lineages develop, including blood cells and cells of the immune system. Hematopoietic stem cells lack cell markers of effector cells (lin-negative). Lin-negative is defined by lacking one or more of the following cell surface markers: CD2, CD3 epsilon, CD4,CD5,CD8 alpha chain, CD14, CD19, CD20, integrin alpha-M, neural cell adhesion molecule 1, lymphocyte antigen 6G, lymphocyte antigen 76. NCIt:C12551 James Malone Tomasz Adamusiak A stem cell from which all cells of the lymphoid and myeloid lineages develop, including blood cells and cells of the immune system. cell type