21.  Together, the genes programmed the salmon to produce growth hormone continuously, and to produce it in two organs rather than the normal one.

22.  Vassey is actually the normal one.

23.  A team led by molecular biologist Robert Weinberg explored whether some genetic element inside tumor cells could transform normal ones into cancer.

24.  However, Surin quoted Chuan as telling Hun Sen that the controversy should be treated as a normal one and be dealt with through a compromise between friends.

25.  Its objective is to integrate these children with the normal ones.

26.  Mainstream chemotherapy drugs are poisons that work by harming cancer cells more than they do normal ones.

27.  Medical researchers hope gene therapy will cure CF by replacing the defective gene with a normal one, Malanga said.

28.  Most cancer drugs now in use attack the growth of all cells, including normal ones.

29.  Or, the defective gene can also be replaced by a normal one.

30.  Put another way, what advantage do eyeless fish have over normal ones in caves?