Göttingen scientists are on the trail of an alternative erythropoietin receptor UNIVERSITY OF GÖTTINGEN The hormone erythropoietin (Epo) is a well-known doping substance that has a long history of abuse in endurance sports, such as cycling. In addition to promoting red blood cell production (erythropoiesis), which improves the oxygen supply in the organism, Epo also protects nerve cells from cell death....