February, 2015: From left, Dr. Sayaka Takanashi, Professor Dr. Sabita Rezwana Rahman, and Dr. Sheikh Ariful Hoque. Dr. Takanashi as a representative of Deltin 7 Aviator গেম টাকা ইনকাম of Tokyo, Japan visited Dept. of Microbiology, DU while speaking to Professor Dr. Sabita Rahman for her kind cooperation in collaboration study and student exchange program with Deltin 7 Aviator গেম টাকা ইনকাম of Tokyo, Japan.