Hematopoietic Growth Factors are substances that stimulate the production and differentiation of blood cells in the bone marrow. They play a crucial role in maintaining healthy blood cell levels, including red blood cells, white blood cells, and platelets. These factors are essential for processes like healing and immune response. Common types of hematopoietic growth factors include erythropoietin, which promotes red blood cell production, and granulocyte-colony stimulating factor (G-CSF), which encourages the production of white blood cells. These factors are often used in medical treatments, especially for patients undergoing chemotherapy or those with certain blood disorders.