Progress in Biological Sciences is a bi-annual journal published by the University of Tehran Press, Tehran, Iran. It provides an international forum for biologists, and covers the entire range of the biological sciences including Animal Biology, Biochemistry and Biophysics, Cell and Molecular Biology, Genetics, Microbiology and Microbial Biotechnology, Plant Sciences, Environmental Sciences and Biotechnology. The journal accepts various types of manuscripts including Original Research Papers (Regular Papers), Review Articles, Short Communications, Viewpoints, and Letter to the Editor.