Scientists are testing antigens P and Q as targets for a monoclonal antibody treatment. They want to avoid binding to healthy cells while treating as many cancer cells as possible. The table shows the number of sampled cells with each antigen.
| Cell type | Cells sampled | Cells with antigen P | Cells with antigen Q |
|---|---|---|---|
| Cancer cells | 100 | 96 | 100 |
| Healthy cells | 100 | 0 | 18 |
Explain which antigen the scientists should choose as the target for the treatment.
60 exam-style questions on AQA GCSE Biology 3.2 Monoclonal antibodies (HT only), covering 3.2.1 Producing monoclonal antibodies and 3.2.2 Uses of monoclonal antibodies. Each one has a worked solution and a mark scheme showing where the marks go.