damaging cellular damage Cell damage (also known as cell injury) is a variety or changes of stress that a cell suffers due to external as well internal environmental changes. Among other causes, this can be due to physical, chemical, infectious, biological, nutritional or immunological factors. Cell damage can be reversible or irreversible. Depending on the extent of injury, the cellular response may be adaptive and where possible, homeostasis is restored. Cell death occurs when the severity of the injury exceeds the cell’s ability to repair itself. Cell death is relative to both the length of exposure to a harmful stimulus and the severity of the damage caused. Cell death may occur by necrosis or apoptosis. Cellular damage is a subtype of damaging: A process that injuries the structure of the cell as the direct or indirect result of an external force. PMID:8703628 cell and tissue damage http://purl.jp/bio/4/id/200906069918862451 https://en.wikipedia.org/wiki/Cell_damage