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By the third or fourth month, erythropoiesis moves to the liver. [3] After seven months, erythropoiesis occurs in the bone marrow. Increased levels of physical activity can cause an increase in erythropoiesis. [4] However, in humans with certain diseases and in some animals, erythropoiesis also occurs outside the bone marrow, within the spleen ...
In the process of erythropoiesis (red blood cell formation), reticulocytes develop and mature in the bone marrow and then circulate for about a day in the blood stream before developing into mature red blood cells. Like mature red blood cells, in mammals, reticulocytes do not have a cell nucleus.
[8] [9] Epoetin alfa is an erythropoiesis-stimulating agent. [8] It stimulates erythropoiesis (increasing red blood cell levels) and is used to treat anemia, commonly associated with chronic kidney failure and cancer chemotherapy. Epoetin alfa is developed by Amgen. [8] It is on the World Health Organization's List of Essential Medicines. [10]
CFU-GEMM is a colony forming unit that generates myeloid cells.CFU-GEMM cells are the oligopotential progenitor cells [1] [2] for myeloid cells; they are thus also called common myeloid progenitor cells or myeloid stem cells.
Erythropoiesis-stimulating agents (ESA) are medications which stimulate the bone marrow to make red blood cells. [1] They are used to treat anemia due to end stage kidney disease, chemotherapy, major surgery, or certain treatments in HIV/AIDS. [1] [2] In these situations they decrease the need for blood transfusions. [2]
Polycythemia is defined as serum hematocrit (Hct) or hemoglobin (HgB) exceeding normal ranges expected for age and sex, typically Hct >49% in healthy adult men and >48% in women, or HgB >16.5 g/dL in men or >16.0 g/dL in women. [8]
Diagram showing the development of different blood cells from hematopoietic stem cells to mature cells.. A blood cell (also called a hematopoietic cell, hemocyte, or hematocyte) is a cell produced through hematopoiesis and found mainly in the blood.
Megakaryocyte–erythroid progenitor cells must commit to becoming either platelet-producing megakaryocytes via megakaryopoiesis or erythrocyte-producing erythroblasts via erythropoiesis. [2] [3] Most of the blood cells produced in the bone marrow during hematopoiesis come from megakaryocyte–erythroid progenitor cells. [4]