11.   In a model of spontaneous anti-tetanus toxoid antibody production after vaccination, PBL secreting specific antibody do not bring about an increase in the serum antibody concentration.

12.   Since the dose were higher with CI Gammagard, the decreased rate of infection might be explained by higher specific antibody concentrations.

13.   However, there was an excellent correlation between the specific antibody titres in sera and in OMT.

14.   Another blood test can tell if the body has activated specific antibodies to fight anthrax.

15.   Abciximab, a highly specific artificial antibody, blocks this process by inhibiting platelet activation.

16.   But this test can be inconclusive, so a second more specific antibody test called a Western blot is often done.

17.   Wang and his colleagues at Columbia University are testing signature sugars to screen blood serum for specific antibodies.

18.   Positive tests are confirmed with a blood test called the Western Blot, which is more sensitive than the ELISA and is able to detect antibodies specific to HIV.