The brain bank accepts donations from people with brain tumors, from both the general population and brain studies participants. Tissues are taken from primary and secondary tumors in the CNS; from patients with neurofibromatosis and tuberous sclerosis; surgical specimens (discarded tissues); and autopsy specimens. Tissues can be fixed, frozen, block, or stained, and are available for any researchers after review by committee, though preference is given to in-house researchers.