Demographic details of patients and controls

Age, sex and race matched controls were compared to medicated schizophrenia patients and a set of minimally medicated and unmedicated schizophrenia patients for proliferation assays. T cells from minimally medicated and unmedicated patients were also used to assess differential gene expression by microarray and for flow cytometric analysis of cell surface marker expression. Ages are expressed as mean ± standard deviation. Patients with recent substance abuse were excluded from the study.