General Biology ( since 1992- 2001), Cell biology (since 1992-2001), Cytology (since 1992-2001), Plant anatomy and morphology (since 1992-2001), Microtechnique (since 1992-2001), Electron microscope techniques in Biology (TEM and SEM) and x-ray diffraction (since 1992-2001), Plastids (since 1992-2001); Graduate Assistant (General Biology, Cytology, Plant Anatomy and morphology, Microtechnique Laboratories; between 1980-1992).