He was invited by Albert Szent-Györgyi Medical University and was appointed chairman of the Department of Anatomy, Histology and Embryology, Szeged, Hungary[1] in 1993.

In 1998, he joined the Institute of Experimental Medicine of the Hungarian Academy of Sciences in Budapest and established the Department of Endocrine Neurobiology.

He has also worked as visiting scientist at the University of Missouri-Columbia, Columbia, MO, USA, the National Institute of Environmental Heath Sciences, (NIEHS), Research Triangle Park, NC, USA and Nagoya, City University, Nagoya, Japan.

He has been studying cellular and molecular mechanisms whereby the hypothalamus regulates centrally the physiological events of reproduction, stress and metabolism.

He elaborated immune electron microscopic techniques for studying the synaptic regulation of hypothalamic neurosecretory systems and elucidated molecular mechanisms of estrogen signalling via nuclear receptors in the brain.