The notion that cells are eliminated or absorbed in an orderly manner is not new. What is new is the recognition that this is an important physiologic process.1 More than 40 years ago embryologists noted that during morphogenesis cells and tissues were being deleted in a predictable fashion. During human development as ontogeny recapitulates phylogeny, there is the loss of branchial arches, the tail, the cloaca, and webbing between fingers. Pediatric surgery is replete with examples where there has been failure of this process, with double aortic arch, sacrococcygeal teratomas, extrophy of the bladder, and syndactyly to name but a few. It is now recognized that apoptosis continues on after development, while the organism is undergoing growth and maturation. In fact the process is life long.