labile cell

In biology, a "labile cell" refers to a cell that is unstable and readily undergoes change or breakdown. This instability is a characteristic of certain cell types within multicellular organisms that are involved in continuous replacement and renewal.1

Most adult tissues are maintained by cell division, where mature cells are replaced by immature stem cells. For example, skin cells are constantly shed and replaced by dividing stem cells. Other cells, like those in the liver, can divide to allow for growth or regeneration after injury. In contrast, some cells, such as nerve cells or heart muscle cells, have a limited capacity to divide and renew themselves, relying more on intracellular component replacement than whole cell replacement. This continuous turnover and replacement is essential for the maintenance of all living systems.234