S-19 Metal Bioscience II Paving a Road to Toxico-Metallomics Research R & D from Analytical Methods to Drug Discovery, Diagnosis and Therapy S19-1 Functions of Selenoproteins S19-2 Two Lines of Defense against Oxidative Stress Mediated by Selenoproteins and Nrf2 S19-3 Neurotoxicity of trace elements and the pathogenesis of senile type dementia S19-4 Strict regulation of zinc homeostasis by zinc transporters S19-5 Structure-dependent nuclaer receptor ligand activities of organometals S19-6 The Study of Metallomics Imaging Using Electron Tracking Compton Camera (ETCC) S19-7 Development of a new sample introduction interface of plasma spectrometry for omics researches S19-8 The role and possibility of new trace element analysis system (ECRIS-MS) in toxico-metallomics