GLUTAMATERGIC AND GABAERGIC INNERVATION OF HUMAN GONADOTROPIN-1 RELEASING HORMONE-I NEURONS 2 Abbreviated title : Glutamate and GABA in inputs to GnRH neurons 3

1 Laboratory of Endocrine Neurobiology, Institute of Experimental Medicine, Hungarian Academy of 7 Sciences, Budapest, 1083 Hungary; 8 2 Department of Forensic Medicine, Faculty of Medicine of the University of Debrecen, Debrecen, 4012 9 Hungary; 10 3 Department of Anatomy, Hokkaido University School of Medicine, Sapporo, Japan; 11 4 Department of Neuroscience, Faculty of Information Technology, Pázmány Péter Catholic University, 12 Budapest, 1083 Hungary 13 14 Corresponding authors: 15 Erik Hrabovszky, MD, PhD, DSc 16 Department of Endocrine Neurobiology 17 Institute of Experimental Medicine 18 Hungarian Academy of Sciences 19 43 Szigony St. 20 Budapest, 1083 Hungary 21 Phone: 36-1-2109400, ext.: 366 22 Fax: 36-1-2109944 23 E-mail: hrabovszky.erik@koki.hu 24 25