Feds in Philadelphia seize human growth hormone heading to Mich. 40 YEARS OF IGF1: Insulin like growth factors: actions on the skeleton in: Journal of Molecular Endocrinology Volume 61 Issue 1 (2018) QK041 Recombinant human bovine porcine IGF 1 LR3 protein IGF LR3 is a peptide that play a role in muscle growth, tissue repair and recovery. But like all peptide therapies, its not one size fits all. , We focus on using peptides thoughtfully and in the