Most people train harder. Smarter people optimize recovery. IGF 1 LR3 is a long acting growth factor analog that supports muscle recovery, lean mass preservation, cellular repair, and metabolic signaling when used under medical Recombinant expression of IGF 1 and LR3 IGF 1 fused with xylanase in Pichia pastoris Applied Microbiology and Biotechnology Springer Nature Link Late life targeting of the IGF 1 receptor improves healthspan and lifespan in female mice Nature Communications human IGF 1 LR3 protein 1000 g Human E. coli ReliaTech GmbH Recombinant expression of IGF 1 and LR3 IGF 1 fused with xylanase in Pichia pastoris Applied Microbiology and Biotechnology Springer Nature Link