Antigen-presenting Cells
Antigen-presenting cells (APCs) are a type of immune cell that play an essential role in the body's immune system by presenting antigens to other immune cells. They are responsible for recognizing foreign or unfamiliar molecules, and presenting them to the immune system in order to trigger an immune response. APCs are found in all vertebrates, and play a crucial role in the recognition and initiation of an adaptive immune response. APCs are primarily responsible for inducing primary immune responses and can also help to control and maintain the subsequent immune response. In addition, APCs can also act as a “memory” of previous immune responses, allowing for a more rapid and effective response to previously encountered antigens. As such, APCs are essential for fighting off infections and for the body's response to vaccination, and their role in the immune system is integral to maintaining health and wellbeing.
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