Recombinant Human LR3 IGF I IGF 1 GMP Protein, CF 8335D GMP: R&D Systems IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease Insulin like Growth Factor 1 (IGF 1) in Hair Regeneration: Mechanistic Pathways and Therapeutic Potential Recombinant Human LR3 IGF I IGF 1 GMP Protein, CF (8335D GMP) by R&D Systems, Part of Bio Techne Before & After 3 years apart. The gym hasn't just changed my appearance, it's changed everything. I'm very thankful I found it (and this sub!) : r veganfitness Localized Igf 1 transgene expression sustains hypertrophy and regeneration in senescent skeletal muscle Nature Genetics