21.   Then the transgenic and knockout mice were bred, eventually producing offspring that had all their mouse hemoglobin genes replaced by the mutant human ones.

22.   They are isolating collections of mouse genes that cause those behaviors.

23.   They can be used for research but probably can never be implanted in humans for fear of mouse diseases or mouse genes, Semb said.

24.   Whatever the mouse genes do, the researchers said they would expect corresponding genes to exist in people, though probably not on the same chromosomes.

25.   A detailed study of the human mu receptor gene shows it is quite similar to the mouse gene, Uhl said.

26.   Celera has not yet started counting mouse genes within in the code, Adams said in an interview.

27.   He and colleagues also found a human gene that strongly resembles the mouse obesity gene, and it may play a similar role in people, Friedman said.

28.   The team is currently working with mouse genes, Sharp said.

29.   The researchers also found that the mouse gene could be turned on by a combination of estrogen and progesterone.

30.   They bred strains of mice that were genetically prone to producing beta-amyloid deposits and that either had the mouse APOE gene or lacked it.