Human IL-7 RATSLP R Heterodimer Protein, Fc TagFc Tag ILR-H5255 is expressed from human 293 cells HEK293. It contains AA Glu 21 - As p 239 IL-7 RA Gln 23 - Lys 231 TSLP R Accession P16871-1 IL-7RA Q9HC73-1 TSLPR. 1 * 1 mg