Increased testicular insulin like growth factor 1 is associated with gonadal activation by recombinant growth hormone in immature rats Reproductive Biology and Endocrinology Springer Nature Link IGF 1 LR3 vs HGH: Which Growth Enhancer Is Better? Swolverine IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society GH IGF 1 roles in reproduction of adult males and potential mechanisms. Download Scientific Diagram IGF 1, the Cross Road of the Nutritional, Inflammatory and Hormonal Pathways to Frailty