– Program  of Anatomy and Development Biology and Compared Embryology Lab from the Faculty of Medicine, University of Chile. Available at http://www.embriologia.cl/

– SOS: Human Embryology. Blog designed to help in the learning process of Human Embryology by questions, images and excersices. Anatomy Department, Faculty of Medicine, UNAM, Mexico. Available at http://sosembriologiahumana.blogspot.com/

– SOS: Cellular and Tissue Biology. Blog designed to help in the learning process of Cellular and Tissue Biology by several excersices. Cellular and Tissue Biology Department, Faculty of Medicine, UNAM, Mexico. Available at http://sosbiologiacelularytisular.blogspot.com/

– Virtual Platform of the University of Jaen. Experimental Biology Department, Cellular Biology Area. Available at http://www.ujaen.es/dep/bioexp/ArchivosCitologia.htm

– Cuban Histologist’s Website: Honor Cathedra Santiago Ramon y Cajal. Available at http://www.sld.cu/sitios/histologia/

– Cuban Embryologist’s Website. Available at http://www.sld.cu/sitios/embriologia/