MOOC Advertisement

Learn More:
Get An Introduction to Reproduction

Learn more about the the science of reproduction. Dr. Teresa Woodruff, creator of Repropedia, is offering a free online course exploring the world of reproduction.

Get Started!


Apoptosis is a type of programmed cell death in multicellular organisms. It is a natural mechanism by which a cell intentionally destroys itself without causing damage to the organism. However, excessive apoptosis may cause atrophy (shrinking or shriveling), while lack of apoptosis in the body can lead to cancer and uncontrolled cell proliferation.