Warner Instruments, a Harvard Apparatus Co., has published its 2006/07 catalog of specialized tools for electrophysiology and cell biology research. The 352-page, color-coded resource specifies new items such as a bilayer clamp amplifier, a planar lipid bilayer thermocycler, a spill sensor system, and confocal, disposable silicone and ultraquiet imaging chambers. Nitric oxide and fiber optic oxygen sensing systems are presented. An overview of imaging systems discusses imaging and recording chambers, stage adapters, temperature controllers, perfusion systems and objective warmers. A chamber cross reference chart is provided, along with charts, diagrams, technical notes, photographs and indexes.