Autocrine signaling is a form of cell communication where a cell produces signals, such as hormones or cytokines, that bind to receptors on its own surface. This process allows the cell to regulate its own functions, such as growth, differentiation, and immune responses. It plays a crucial role in various biological processes, including development and tissue repair. In autocrine signaling, the effects are localized, meaning the signals primarily affect the cell that released them rather than neighboring cells. This mechanism is important in many systems, including the immune system, where cells like T cells use autocrine signaling to enhance their activity and proliferation.