Neurodegenerative Disease Brain Bank and the Douglas Bell-Canada Brain Bank (DBCBB) (www.douglasbrainbank.ca) and included both schizophrenia and controls. Postmortem brain specimens were collected postmortem following consent obtained with next of kin, dissected by neuropathology technicians, snap-frozen and stored at −80°C. Genomic DNA was isolated from all brain samples using a standard phenol-chloroform extraction protocol. DNA was tested for degradation and purity using spectrophotometry and gel electrophoresis.
