Figure 14.2 Formation of blood cells All of the different types of blood cells develop from a pluripotent stem cell Pluripotent stem cell in the bone marrow. The precursors of differentiat ed cells undergo several rounds of cel division as they mature, but cel proliferation ceases at the termi- Myelo nal stages of differentiation Lymphoid o(@◎◎ 必(曝◎ T ly Granulocytes