Recombinat Protein,Mouse IgG2a Fc Protein, Tag Free,Mouse IgG Fc, Tag Free (IGA-M5207) is expressed from human 293 cells (HEK293). I t contains AA Glu 98 - Lys 330 (Accession CAC20702).This protein carries no tag. The protein has a calculated MW of 2 1 * 200 µG