IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society Primary IGF 1 Deficiency Child Growth Foundation Frontiers Sheep recombinant IGF 1 promotes organ specific growth in fetal sheep Prolonged Fasting Reduces IGF 1 PKA to Promote Hematopoietic Stem Cell Based Regeneration and Reverse Immunosuppression: Cell Stem Cell The Actions of IGF 1 in the Growth Plate and Its Role in Postnatal Bone Elongation Current Osteoporosis Reports Springer Nature Link Insulin Like Growth Factor 1 (IGF 1) and Its Monitoring in Medical Diagnostic and in Sports