rHuman GM-CSF is a glycosylated polypeptide chain containing 127 amino acids (18-144 aa CSF2_HUMAN P04141 ), fused to 10 His tag at N-terminal. rHuman GM-CSF migrate as a broad band between 15 and 25 kDa due to post-translation modification, in particular glycosylation. Human recombinant protein expressed in Nicotiana benthamiana. Recombinant human Granulocyte-macrophage colony-stimulating factor (GM-CSF) contains a 10-His-tag at the N-terminal end, is produced by transient expression in non-transgenic plants and is purified by sequential chromatography (FPLC). This product contains no animal-derived components or impurities. Animal free product. Purity >97% by SDS-PAGE gel