The effects of prophylactic treatment with lithium on immunological function in patients with mood disorders : A. Sluzewskaa, J.K. Rybakowskia, E. Bosmansb, M. Sobieskac, K. Wiktorowiczc. aDepartment of Adult Psychiatry, University of Medical Sciences, Poznan, Poland. bEurogenetics, Tessenderlo, Belgium. cDepartment of Immunology, University of Medical Sciences, Poznan, Poland