Apoptosis

Apoptosis is a form of cell death which allows the body to regulate the number and type of cells within an organism, leading to the removal of damaged or unnecessary cells. Apoptosis is an essential process in many areas of biology, including early development and tissue homeostasis. Apoptosis is also important in immunology, as it allows for the elimination of potentially harmful cells that have been infected by viruses or bacteria, or become cancerous. In addition, apoptosis is involved in the regulation of inflammation, and can play an important role in autoimmune diseases. This process is also used to reduce the size of organs, such as the thymus, during aging.