Cell Renewal Patterns

Abstract
IF all the many different cell populations of man were renewed continually, the organs they comprise would function normally, and their host would live on forever. Although this state of affairs might produce difficulties of its own, it would solve many biologic problems that occur as a consequence of the failure of renewal of certain cell populations. In this presentation an examination is made of the patterns of cell renewal, in vivo, in several normal and abnormal cell populations as well as in experimentally induced modifications thereof. Some relations of these data to human cancer and aging are considered.The . . .