Key points are not available for this paper at this time.
Erythropoietin, the hormone that is the primary regulator of erythrocyte production, has been purified from anemic-sheep plasma, with a purification factor of more than 1 million. Gel electrophoresis shows that the major contaminant is desialated erythropoietin.
Goldwasser et al. (Thu,) studied this question.