Extracellular research focuses on studying molecules, proteins, and other components that are found outside of cells in organisms. This area of research is important in understanding how cells communicate with each other, how biological processes are regulated, and how diseases can develop. Extracellular research often involves studying signaling pathways, interactions between cells and their environment, and the impact of extracellular components on cellular functions. This research area is relevant in various fields, including biochemistry, molecular biology, and medicine.