Highly conserved mechanisms regulating cell signaling precisely orchestrate cellular process activities. Aberrant signaling, implicated in many diseases including cancer and neurodegeneration, prompts ever increasing research efforts to better understand cell signaling pathways. Arbor Assays provides tools to measure the status and activity of important signaling enzymes and effector molecules. Our kinase and cyclic nucleotide assays are the easiest and most sensitive available to help researchers answer important questions about cell signaling regulation.