Iran and Tajikistan signed here yesterday a Memorandum of Understanding (MoU) on expansion of scientific and research cooperation and exchange of university students and professors. The MoU was signed by Iran's Minister of Science, Research and Technology Mohammad-Mehdi Zahedi and Tajik Minister of Education Abdul Jabbar Rakhmonov, the Iranian news agency "IRNA" reported. According to the 15-Article MoU, the two sides pledged to prepare ground for participation of Iranian and Tajik researchers in scientific conferences.