GCSE Biology OCR B J257

explain the use of medicines, including antibiotics, in the treatment of disease

calculate cross-sectional areas of bacterial cultures and of clear zones around antibiotic discs on agar jelly using $πr^2$PAG7

evaluate some different treatments for cardiovascular disease, including lifestyle changes, medicines and surgery

describe the process of discovery and development of potential new medicines including preclinical and clinical testing

**describe how monoclonal antibodies can be used to treat cancer

including:

• produce monoclonal antibodies specific to a cancer cell antigen
• inject the antibodies into the blood
• the antibodies bind to cancer cells, tagging them for attack by white blood cells
• the antibodies can also be attached to a radioactive or toxic substance to deliver it to cancer cells**