A considerable amount of biological research into schizophrenia, mainly upon blood fluids, is performed throughout the world. The authors report their latest findings on a plasma protein factor and relate these findings to other domestic research and to recent research in other nations, particularly the Soviet Union. They hypothesize that a malcontrolled blood protein contributes to the genesis of schizophrenia by selectively altering neuronal permeability to precursors of important neurotransmitters; if this occurs, it would disrupt information processing in the brain.Abstract Teaser