2011 - 2012 Chair , Department of Environmental and Plant Biology, Ohio University, Athens, OH 1998 - present Professor, Department of Environmental and Plant Biology and the Molecular and Cellular Biology Program, Ohio University, Athens, OH 1993 - 1996 Chair, Molecular and Cellular Biology Program, Ohio University, Athens, OH 1992 - 1998 Associate Professor, Department of Environmental and Plant Biology and the Molecular and Cellular Biology Program, Ohio University, Athens, OH 1986 - 1992 Assistant Professor, Department of Environmental and Plant Biology and the Molecular and Cellular Biology Program, Ohio University, Athens, OH 1983 - 1986 Research Associate (po stdoctoral fellow) at Washington University, St. Louis, MO in the laboratory of Dr. Joseph E. Varner studying hydroxyproline - rich glycoproteins (extensins) 1979 - 1983 Research Assistantship at the Rutgers Medical School to isolate and characterize chick cD NAs coding for types I and II procollagen under the direction of Dr. Bjorn R. Olsen 1979 Teaching Assistantship for an introductory undergraduate Biochemistry course and a graduate Biochemistry course 1977 - 1978 Undergraduate senior research thesis on phy tochrome control of hydroxyproline metabolism in Pisum sativum under the direction of Dr. Carl S. Pike