This volume contains the contributions to the "3rd Expert Meeting in Psychoneuroimmunology," held in Munich, Germany in autumn 1997. Clinical psychiatrists, neuroscientists and researchers in basic immuno logy from Europe and the USA gather together annually at this new tra ditional meeting to discuss new findings and trends in the relationship between psychiatric disorders and the immune system. Pinpointed at the Munich meeting in particular were the possible influence of viral infec tions on psychiatric disorders, especially schizophrenia, and the possible pathophysiological mechanisms...