ERYTHROPOIETIN (EPO) INTRODUCTION
Erythropoietin (abbreviation EPO) is endogenous glycoprotein cytokine, with protein chemical formula C815H1317N233O241S5 and protein avarage weight 18396.1 Da. Erythropoietin is secreted mainly by the kidney in response to cellular hypoxia; it stimulates red blood cell production (erythropoiesis) in the red bone marrow.