IGF 1LR3 IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society LR3 IGF 1 (Human), Recombinant Protein, CHO, Tag Free Growth Hormone and Insulin like Growth Factor I: Novel Insights into the Male Reproductive Health IntechOpen IGF Penis Enlargement: What the Evidence Actually Shows About IGF 1 and Penile Growth PDF) Effect of insulin like growth factor I treatment on serum androgens and testicular and penile size in males with Laron syndrome (primary growth hormone resistance)