My best friend hasn't cam to school since last week and I try to call her but she nvermind picks up I come to her house she's not home where is she Im really worried and my teachers bday is soon and I don't know what to give her oh dear here comes my mum to take me shopping for my teachers present.
Erythropoiesis (from Greek 'erythro' meaning red and 'poiesis' meaning to make) is the process which produces red blood cells (erythrocytes). It is stimulated by decreased O 2 in circulation, which is detected by the kidneys, which then secrete the hormone erythropoietin.
The production of red blood cells in the body is called erythropoiesis. Erythropoietin is a hormone that's made by the kidneys, and it tells the body to make more red blood cells. This hormone does pass into the breast milk, and it may help to stimulate the production of red blood cells in the newborn.