“Senescent cells arise in almost every tissue in the body when cells experience damage that is severe enough to halt cell division. Although senescent cells remain active and contribute to normal processes such as tissue regeneration and wound healing, they can build up and linger in our tissues as we age. This buildup over time can lead to scarring, chronic inflammation, and age-related illnesses. A better understanding of senescent cells is needed to develop strategies to remove them and treat a variety of age-related conditions.”
Detail at;
https://www.nih.gov/news-events/nih-research-matters/senescent-cells-mapped-human-body-over-lifespan