Quantitative Imaging of Serotonin Autofluorescence with Multiphoton Microscopy, S.K. Kaushalya and S. Maiti Monitoring Receptor-Mediated Changes of Intracellular cAMP Level by Using Ion Channels and Fluorescent Proteins as Biosensors, E.G. Ponimaskin, M. Heine, A. Zeug, T. Voyno-Yasenetskaya, and P.S. Salonikidis Membrane Organization and Dynamics of the Serotonin1A Receptor Monitored Using Fluorescence Microscopic Approaches, S. Kalipatnapu, T.J. Pucadyil, and A. Chattopadhyay Calmodulin Is a 5-HT Receptor-Interacting and Regulatory Protein, J.N. Turner, S.D. Coaxum, A.K. Gelasco, M.N. Garnovskaya, and J.R. Raymond Identification of Novel Transcriptional Regulators in the Nervous System, F. Remes-Lenicov, K.X. Jacobsen, A. Rogaeva, M. Czesak, M. Hadjighasem, M. Daigle, and P.R. Albert Serotonin 2A (5-HT2A) Receptor Function: Ligand-Dependent Mechanisms and Pathways, I. Raote, A. Bhattacharya, and M. M. Panicker The 5-HT1A Receptor: A Signaling Hub Linked to Emotional Balance, P. Banerjee, M. Mehta, and B. Kanjilal Do Limits of Neuronal Plasticity Represent an Opportunity for Mental Diseases, Such as Addiction to Food and Illegal Drugs? Use and Utilities of Serotonin Receptor Knock-Out Mice, V. Compan Use of Mice with Targeted Genetic Inactivation in the Serotonergic System for the Study of Anxiety, M. Toth Index