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My lab is interested in the general question of how signaling circuits generate complex cellular behaviors such as cell polarity, motility, growth, and differentiation. Because these processes are highly complex, we are developing new techniques to isolate and quantitatively interrogate individual steps in the signaling cascade. We recently developed a simple, generic, and genetically encoded light-control module that can be used to regulate signaling in eukaryotes. This system gives us unprecedented spatial and temporal control of a wide range of intracellular signals and will enable us to dissect the logic of signal processing in a manner that has not been possible with conventional tools.