Reset Hemopoiesis occurs in of certain bones. The process of hemopoiesis starts with hemopoietic stem cells called . They produce two different lines for blood cell development: The forms (1) erythrocytes, (2) all leukocytes except lymphocytes, and (3) megakaryocytes. The forms only lymphocytes. The maturation and division of hemopoietic stem cells is influenced by . These molecules are all growth factors.

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Explanation:

Hemopoiesis is the process of formation of blood cells in bone marrow. It occurs in Red bone marrow of bones. All the blood cells and immune cells arise form a type of cell called hemopoitic stem cell. It is a multipotent cell. during hemopoiesis the stem cell differentiates along one of the two pathways - lymphoid progenitor or myeloid progenitor.

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