sejtanyagcserét
Sejtanyagcserét, also known as cell turnover or cellular renewal, refers to the continuous process by which old cells in a tissue or organ are replaced by new cells. This phenomenon is crucial for maintaining tissue integrity, functionality, and overall health. The rate of sejtanyagcserét varies depending on the type of tissue. For example, in the skin, the process occurs over weeks to months, while in the gut lining, it happens daily. The mechanism involves several key steps: cell division, differentiation, and programmed cell death (apoptosis).
During cell division, stem cells located in specific niches within tissues divide to produce daughter cells.
Sejtanyagcserét is essential for tissue repair and regeneration after injury. It also plays a role in the