Mouse CD3ECD3D Heterodimer Protein, His TagFlag Tag MALS verified CDD-M5219 is expressed from human 293 cells HEK293. It contains AA Asp 23 - Asp 108 CD3E Phe 22 - Ala 105 CD3D Accession P22646-1 CD3E P04235-1 CD3D. 1 * 1 mg