Human Laminin 221 Protein, premium grade (LA2-H5269) is expressed from human 293 cells (HEK293). It contains AA Leu 1900 - Ala 2722 (Laminin alpha2E8) & Leu 1573 - Gln 1798 (Laminin beta2E8) & Asn1364 - Pro1609 (Laminin gamma1E8) (Accession # P24043-1 (Laminin alpha2E8) & P55268-1 (Laminin beta2E8) & P11047-1 (Laminin gamma1E8)).