The Head of the Department of biology (Prof. Dr. Naseer Mirza Hamza) published a paper entitled (Studying the protective role of cranberry extract and some physiological laws in rats induced by sodium fluoride), which was published in the Annals of Tropical Medicine and Public Health. The research was summarized to determine the biological activity of cranberry extract on some blood parameters of kidney function in laboratory albino mice (Rattus norvegicus).