Somatotropin
Somatotropin is a polypeptide growth hormone that regulates the growth of bone, muscle, and other body tissues. Somatotropin is secreted by somatotropic cells within the anterior lobe of the pituitary gland. Somatotropin is important in human development as it stimulates growth, cell regenerations and reproduction in humans and other animals. The levels of somatotrophin rise increasingly during childhood and also occur at its peak in puberty.