<unk> O is highly glycosylated (40% of total molecular weight), with half-life in blood around 5 h.<unk> O's half-life may vary between endogenous and various recombinant versions. Additional glycosylation or other alterations of<unk> O via recombinant technology have led to the increase of<unk> O's stability in blood (thus requiring less frequent injections).
Erythropoietin
Granulocyte colony-stimulating factor
Thyroglobulin
Granulocyte-macrophage colony-stimulating factor
Hemopoietic growth factor
Growth hormone
Parathyroid hormone
Colony-stimulating factor