11.   Antibodies are molecules of the immune system that can detect a tiny concentration of a specific contaminant or chemicals, even in complex mixtures like gasoline and foods.

12.   Antibodies are notoriously poor at fending off HIV.

13.   Antibodies are proteins formed to destroy invading germs in the blood.

14.   Antibodies are proteins that stick to viruses and other invaders and prevent them from entering cells.

15.   Antibodies are proteins that the body forms to defend against triggers in foreign tissue known as antigens.

16.   Antibodies are the typical way to screen for infectious agents.

17.   Antibodies are a natural defense against disease.

18.   Antibodies are proteins are formed to destroy invading germs in the blood.

19.   Andrews said antibodies were large proteins that are normally too big to cross a barrier of tiny blood vessels and membranes that keep such things from reaching the brain.

20.   Antibodies are proteins that the body makes to defend against infection.