DNA repair mechanism is pretty complicated. Repair mechanism recognize and remove incorrect or damaged nucleotides. I would like to give this movie to all scientists around the world. I am Dr Cong, a geneticst, working at the Molecular Biology Laboratory in Hanoi. Vietnam. My address is : Mr nguyen Thnah Cong Molecular Biology Laboratory Agricultural genetics Institute Vien Di Truyen nong Nghiep Tuliem, Hanoi VIETNAM