| When exposed to an antigen, that is a virus or a bacterium, the body produces antibodies. |
| Once antibodies have been produced for a particular antigen they tend to remain in the body. |
| If the HLA antigen and specific antibody bind, and complement is added, the cells in that well will be killed. |
| This assay is a highly quantitative and direct measure of antibody response to a specific antigen. |
| This antigen had rhamnose side chains at least a disaccharide in length and was the antigenic determinant of A-variant carbohydrate. |
| When the synthetic peptide was used as the antigen, a monoclonal antibody was obtained. |
