ORF Genetics ISOkine IGF 1 LR3 Growth Factor 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 Recombinant Human LR3 IGF 1(E51R) Protein IGF1 LR3 Peptide Anderson Longevity Clinic Human Growth Hormones Lr3 Igf 1 Peptides Injection Trader Retailer from Nagpur Late life targeting of the IGF 1 receptor improves healthspan and lifespan in female mice Nature Communications