Local and global stability of biochemical reaction network Dynamics Gheorghe Craciun Modern biological research provides countless examples of biochemical interaction networks. For example, at the intracellular level, the nodes of these interaction networks could be signaling molecules, genes, and gene products. In order to understand the role played by some of these interactions one often faces great difficulties in trying to interpret the effect of positive and negative feedbacks, nonlinear interactions, and other complex signaling between the nodes of the network. We will analyze the connections between reaction network structure and the capacity for complex dynamic behavior. These connections may play an important role in facilitating the understanding of experimental data.