IGF1 LR3 1mg Peptide Bluewell Peptides Anti Myc Tag Mouse mAb conjugated Magnetic Beads Frontiers GPI anchored glutathione S transferase as marker allows affinity sorting of transfection positive cells Attenuated glucose stimulated insulin secretion during an acute IGF 1 LR3 infusion into fetal sheep does not persist in isolated islets Journal of Developmental Origins of Health and Disease Cambridge Core Covalent binding of glutathione on magnetic nanoparticles: Application for immobilizing small fragment ubiquitin like specific protease 1 ScienceDirect