1. Neuromorphological and Neuroendocrine Research Laboratory, Departments of Anatomy, Histology, and Embryology (M.C., M.P., A.D.), Hungarian Academy of Sciences and Semmelweis University, H-1094 Budapest, Hungary
2. Human Morphology and Developmental Biology (I.B., G.M.N.), Hungarian Academy of Sciences and Semmelweis University, H-1094 Budapest, Hungary
3. Section on Fundamental Neuroscience (T.B.U.), National Institute of Mental Health, Bethesda, Maryland 20892