Cell-to-cell interactions refer to the ways in which cells communicate and connect with each other. These interactions are crucial for various biological processes, including tissue formation, immune responses, and wound healing. Cells use different methods, such as chemical signals, direct contact, and electrical signals, to relay information and coordinate their activities. These interactions can occur through specialized structures like gap junctions and tight junctions, which allow cells to share ions and small molecules. Additionally, receptors on cell surfaces can bind to specific ligands, triggering responses that influence cell behavior. Overall, cell-to-cell interactions are essential for maintaining the health and function of tissues.