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Zedan, H. H., "Recent advances in vaccine development. Second International Conference on Basic and Applied Sciences", Second International Conference on Basic and Applied Sciences, Sokhna, ‎Egypt.‎, 2 April, 2014.
Sheraba, N. S., A. S. Yassin, M. R. Diab, M. A. Amin, and H. H. Zedan, "Detection of endotoxin producing Gram negative bacteria through an environmental ‎monitoring program applied in an antisera production plant. ", Egypt. J. Biomed. Sci. , vol. 38, pp. 211-224, 2014.
Issa, A. H., M. Shaaban, H. Zedan, and A. Fahmy, "Evaluation of the effects of aluminum phosphate and calcium ‎phosphate nanoparticles as adjuvants in vaccinated mice", International Journal of Chemical Engineering and ‎Applications , vol. 5, pp. 367-373, 2014.
Zedan, H., E. N. Kholy, A. Barakat, and M. Zaki, "Genetic mutations in influenza viruses and its relation to drug resistance. ", Ain Shams Univ. J. Environment. Stud, vol. 10, pp. 123-132, 2014.
Sheraba, N. S., A. S. Yassin, M. R. Diab, M. A. Amin, and H. Zedan, "Determination of possible sources of endotoxin contamination during different steps of antisera production", Fourth International Scientific Conference of Faculty of Pharmacy, Cairo University, Cairo, Egypt, 24 April, 2013.
Yassin, A., H. H. Zedan, and et al, "Antibiotic resistance patterns among common Gram positive and Gram negative pathogens in clinical isolates from major hospitals in Cairo, Egypt.", Worldwide Efforts in Fighting against Microbial pathogens: From Basic Research to Technological Developments”, A. Mendez-Vilas (ed.), Florida, Brown Walker Press, 2013.
Hashem, R., M. Amin, and H. Zedan, "Fluoroquinolone resistance mechanisms in methicillin-resistant Staphylococcus aureus clinical isolates from two major hospitals in Cairo, Egypt. ", Journal of Infection in Developing Countries , vol. 7, pp. 796-803, 2013.
Ali, M., H. Zedan, and A. Kholafi, "Evaluation of viability of BCG vaccine using a conventional count method and MTT assay. ", Egypt. J. Biomed. Sci. , vol. 36, pp. 139-151, 2012.
Elmoghazy, M. H., H. Zedan, and A. E. Ali, "Study of the effectiveness of selected chemical agents used for disinfection of industrial water purification systems", Egypt. J. Biomed. Sci. , vol. 35, pp. 248 – 262, 2011.
Zedan, H., Z. N. Said, and E. R. Far, "Study of the prevalence of occult HBV infection among hemodialysis Egyptian patients ", Med. J. Teach. Hospitals & Institutes , vol. 24, issue 30, pp. 361-376., 2011.
Zedan, H., "From Kuala Lumpur to Montecatini to Brazil", Protected areas for achieving biodiversity targets”, Zedan H., K. J. Mulongoy, A. Nogueira, J. Fry, S. B.Gidda, P. Deda, D. Ainsworth, M. Régnier (Eds.), CBD News Special Edition, Montreal, CBD Seretariat, 2005.
Zedan, H., K. J. Mulongoy, A. Nogueira, J. Fry, and S. B.Gidda, "From Kuala Lumpur to Montecatini to Brazil. In ” Protected areas for achieving biodiversity ‎targets”", CBD News Special Edition, pp. 2-3, 2005.
Zedan, H., P. Deda, and J. Mulongoy, "The major threats to the conservation and sustainable use of Island biological diversity. ", Natural Resources Forum: A United Nations Sustainable Development Journal , vol. 10, pp. 11 – 23, 2005.
Zedan, H., "Biodiversity and Sustainable Development", CBD News Supplement, Montreal, Canada, CBD Secretariat, 2002.
Zedan, H., "The road to the biosafety protocol", “The Cartagena Protocol on Biosafety. Reconciling Trade in Biotechnology with Environment and Development”. C. Bail, R. Falkrner and H. Marquard, editors, London, The Royal Institute of International Affairs, Earthscan Publications Ltd, 2002.
Zedan, H., and R. Olembo, "Biotechnology and Sustainable development: Potential, Prospects and Challenges. ", Environment 2000 and Beyond” (A.K. Hegazy, Ed) , Cairo, Egypt., Horus Printing Co., 1999.
Zedan, H., "The Promise and the Perils of Biotechnology: Regulatory Framework issues", Biotechnology and Biosafety” (I. Serageddin and W. Collins, Editors), Washington, DC, World Bank, 1999.
Zedan, H., "Capacity building for safety in biotechnology", Transboundary movement of living modified organisms resulting from modern biotechnology: issues and opportunities for policy makers”, (K.L. Mulongoy, Ed.),, Geneva, International Academy of the Environment, 1997.
Zedan, H., "Loss of plant germplasm: a call for action", IBPGR /FAO/ IUCN/UNEP Manual of Plant Germplasm Collection , Rome, IBPGR, 1994.
Zedan, H., "Pest Organisms: numbers, ecosystem impact and developing countries’ needs", Identification and Characterization of Pest Organisms" (D.L. Hawksworth, Ed.). , Wallingford, U.K, C.A. B. International,, 1994.
Zedan, H., "The Economic Value of Microbial Diversity", Industrial Microbiology News (US)43: , vol. 43, issue 5, pp. 178-185., 1993.
Zedan, H. H., and R. Olembo, "Biotechnology Development and Diffusion", Bioprctice, Trieste, Italy, ICGEB, 1992.
Ng, N. Q., P. Perrino, F. Attere, and H. Zedan, Crop Genetic Resources of Africa, Volume II, , , London, The Trinity Press, U.K., 1991.
Zedan, H., "Forward to Africa genetic resources", Crop Genetic Resources of Africa, Volume I, 3. Attere, F., Zedan, H. and Ng. N.Q. (editors) , London, The Trinity Press, U.K., 1991.