The HBTB is a member of the BrainNet Europe II. consortium. The activity of the HBTB is in accordance with the ethic and safety rules and the scientific requirements of the consortium. Only dissected brain samples and topographically oriented tissue blocks are stored. The microdissection of 260 different brain nuclei is performed on frozen brains and the samples are kept on -70°C. These samples have been improved to be excellent for neurochemistry, neuroendocrine, molecular biological, proteomic and genomic studies. Very short post mortem delay. Most of the brains were removed from the skull and frozen within 2-6 hours after death.