Adipose tissue is the principal source of leptin, a cytokine-like peptide with many biologic functions. Leptin binds to the leptin receptor, present in the hypothalamus and in many other tissues, and ...
Lipomas are usually benign growths under the skin. Learn how to identify them—and when they should be removed—here. Photo: Getty Images/Science Photo Library RF Lumps under the skin can be a huge ...