Answer:
Hematopoietic stem cells.
Step-by-step explanation:
Hematopoietic stem cell is a type of immature cell that can differentiate into all types of different blood cells. This stem cell is located in the bone marrow and peripheral blood.
Hematopoietic stem cell can be differentiated into red blood cells, platelets and white blood cells. Hematopoietic stem cell is responsible for the constant renewal of the the blood cells.
Thus, hematopoietic stem cell is a blood stem cell that can differentiate into different blood cells only.