Work in progress centered about the isolation of taraxein from the serum of schizophrenic patients and its administration to monkeys and human volunteers is presented. The taraxein was extracted from a variety of schizophrenic patients in 4 institutions and administered on 17 occasions to nonpsychotic human volunteers and on one occasion to a schizophrenic patient in remission. Several additional studies are planned or in progress and we expect that in the near future it will be possible to present considerably more information.Abstract Teaser