Network biology is a research area that focuses on the study of complex biological systems using network analysis approaches. It aims to understand how biological molecules (such as genes, proteins, and metabolites) interact with each other to form intricate networks, and how these interactions give rise to various biological functions and behaviors. Network biology utilizes tools and techniques from fields such as graph theory, computational biology, and systems biology to analyze and model biological networks. By studying the structure and dynamics of these networks, researchers can gain insights into the underlying mechanisms of diseases, biological processes, and evolutionary relationships. Overall, network biology provides a holistic perspective on biological systems, allowing researchers to uncover new relationships and patterns that may not be apparent from individual components alone.