Methods and materials are provided for the production of compositions of erythropoietin protein, wherein said {HEAD ~ compositions} comprise a pre selected N linked glycosylation pattern as {TAIL ~ the predominant} N glycoform 
Methods and materials are provided for the production of compositions of erythropoietin protein , wherein said { HEAD ~ compositions } comprise a pre selected N linked glycosylation pattern as { TAIL ~ the predominant } N glycoform
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH