Activation of insulin like growth factor 1 receptor (IGF 1R) promotes growth of colorectal cancer through triggering the MEX3A mediated degradation of RIG I ScienceDirect This Peptide Is Next Level for Growth & Recovery Meet IGF LR3 the long acting insulin like growth factor that researchers can't stop talking about. From muscle growth to cellular repair , IGF 1 LR3 Receptor Grade 1mg Enhance Muscle Growth & Recovery Buy Now LR3 IGF 1 (Human), Recombinant Protein, CHO, Tag Free