What is the Extracellular Matrix (ECM) and Its Role?
The ECM is a complex network of proteins and polysaccharides secreted by cells. It provides structural support and mediates biochemical signals required for cellular activities. Key components include collagen, elastin, fibronectin, and proteoglycans. The ECM influences cell behavior by interacting with cell surface receptors, affecting processes such as migration, proliferation, and differentiation.