Figure 1From: Glutaraldehyde-Modified Recombinant Fel d 1: A Hypoallergen With Negligible Biological Activity but Retained ImmunogenicitySDS-PAGE analysis of Fel d 1 preparations. SDS-PAGE was performed under reducing conditions and silver-stained. Lane 1, see blue plus marker (Invitrogen); lane 2, nFel d 1; lane 3, rFel d 1 (P. pastoris); lane 4, rFel d 1; lane 5, glutaraldehyde-modified rFel d 1.Back to article page