Doaa M. Mokhtar, PhD, is a Professor of Histology in the Faculty of Veterinary Medicine at Assiut University in Egypt, where she has been teaching undergraduate and postgraduate courses (cytology, general histology of domestic animals, histology of the body systems, histology of avian, and histology of fish) since 2003. Dr. Mokhtar has over 35 publications on fish and related areas to her name. She is also an editor for the journals Cytology & Histology International Journal, Journal of Fisheries and Aquaculture Development, and the American Journal of Life Science Researches, and acts as a reviewer for the journals International Journal of Molecular Zoology, Journal of Microscopy and Ultrastructure, Anatomia Histologia Embryologia, Anatomical Record, and Cell Biology International. Dr. Mokhtar is a member of the Egyptian Society of Histology and Cytology.