Calcium imaging of vomeronasal organ response using slice preparations from transgenic mice expressing G-CaMP2

The vomeronasal organ (VNO) in vertebrate animals detects pheromones and interspecies chemical signals. We describe in this chapter a Ca(2+) imaging approach using transgenic mice that express the genetically encoded Ca(2+) sensor G-CaMP2 in VNO tissue. This approach allows us to analyze the complex patterns of the vomeronasal neuron response to large number of chemosensory stimuli.