Definition: Pituitrin is a protein that plays a crucial role in the regulation of growth, development, and metabolism in the human body. It is an essential hormone for various physiological processes including growth, energy metabolism, and nerve signaling. Pithin is produced by the pituitary gland and serves as a regulator of other hormones such as thyroid-stimulating hormone (TSH), growth hormone (GH), and insulin. Pituitrin plays a critical role in regulating the activity of various cells