Excerpt from the May 21, 1966, issue of Science News
Growth hormone mapped — Discovery of the complete chemical structure of the human growth hormone has been reported…. The discovery marks a major advance toward understanding how the powerful growth-promoting substance works and increases the chances for its eventual synthesis in the laboratory…. Some 5,000 fresh human pituitary glands were required to achieve the results.
— Science News, May 21, 1966
In 1979, researchers produced a synthetic human growth hormone in the lab, using bacteria equipped with human hormone genes. Six years later, the synthetic growth hormone was approved for medical use; distribution of growth hormone collected from human pituitary