| 1 | One marker it did contain, however, was prostate-specific antigen, or PSA. | |
| 2 | The most significant factor in prostate cancer is PSCA, or prostate stem cell antigen. | |
| 3 | Antibodies perform their function by combining with the specific antigens that stimulated their production. | |
| 4 | The antigens helped them adapt to diseases in the north much more quickly than would have otherwise occurred. | |
| 5 | Lassa fever is diagnosed by detection of Lassa antigen, anti-Lassa antibodies, or virus isolation techniques. |