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- Production involves the use of mice. These mice are used to produce both antibodies and tumour cells. The production of tumour cells involves deliberately inducing cancer in mice. Despite specific guidelines drawn up to minimise any suffering, some people still have reservations about using animals in this way.

- To eliminate the need for humanisation of the antibody, transgenic mice can be used. In this case, a human gene is placed in the mice to that they can produce human antibodies rather than mouse antibodies. This raises the whole debate surrounding the ethics of genetic engineering.

- Monoclonal antibodies have been used successfully to treat a number of diseases, including cancer and Diabetes, saving many lives. There have also been some deaths associated with their use in the treatment of multiple sclerosis.

- Testing for the safety of new drugs presents certain dangers. In march 2006, six healthy volunteers took part in the trial of new monoclonal antibody (TGN1412) in London. Within minutes they suffered multiple organ failure, probably as a result of T cells overproducing chemicals that stimulate an immune response or attacking the body tissues. All the volunteers survived, but it raises issues about the conduct of drug trials.

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Q: What are the ethical issues with monoclonal antibodies?
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