21.   Baumgartner said antibodies are the key to the equation because they are the raw material used for testing.

22.   A lab work-up can determine if antibodies to HIV are present in that fluid.

23.   Abgenix, whose technology is not used in any monoclonal antibodies now on the market, says its antibodies are fully human.

24.   But as scientists piece together the AIDS puzzle, there is a mounting consensus that antibodies alone are not sufficient to stop the virus.

25.   But screening the serum with a sugar chip could determine which antibodies were present and quickly lead a physician to the microbial culprit.

26.   Human antibodies can be valuable in treating diseases, and having them made in bulk by a cow could be a significant advance.

27.   If antibodies are present, the person is infected.

28.   Moreover, many scientists say antibodies are poised to play an even bigger role.

29.   Such antibodies are proteins that are designed to home in on a specific biological target.

30.   The antibody will also be of great use to researchers.