What is a "dendritic cell"?

A dendritic cell is an antigen-presenting cell that plays a crucial role in the immune system by capturing and presenting antigens to other immune cells, thus initiating and coordinating immune responses in the human body. Dendritic cells act as sentinels, patrolling various tissues, and are responsible for activating T cells and shaping both innate and adaptive immune responses. They are known for their unique ability to bridge the innate and adaptive immune systems, making them essential for effective immune defense against pathogens and the development of immunological memory.