Gut derived IL 13 contributes to growth via promoting hepatic IGF 1 production Microbiome Springer Nature Link Insulin like growth factor 1 promotes cell cycle progression via upregulation of cyclin D1 expression through the phosphatidylinositol 3 kinase nuclear factor B signaling pathway in FRTL thyroid cells Acta Pharmacologica Sinica Awesome results this year igf 1 lr3 ,cyp,e,primo then adding tren for 2 months then removed primo and tren added FTPP and diaing diet with labs and results hopefully helps : r Peptides IGF 1 LR3 DOSES FOR MASSIVE GROWTH! #askDave