The earlier the vaccine is given the less reliable it is, because maternal antibodies may prevent it from taking effect.

An antibody can apparently prevent transmission of the AIDS virus from mother to fetus.

Any antibodies present would bind to viruses and prevent the hemagglutination reaction that would otherwise take place.

They thought that the antibodies might prevent intestinal infections in people, but they seem to be wrong.

These antibodies would prevent NDV from infecting and killing cancer cells.

These antibodies prevent the growth of new blood vessels, cutting off the supply of oxygen and nutrients to cancer cells.

Ms. Todd was tested and told that her antibodies were preventing her from having a baby.

After that, if a person smokes, the antibodies would bind to the nicotine and prevent it from reaching the brain.

Both gamma-interferon and antibodies prevent tumor growth in multiple ways.