Please answer the following question: Answer the following question given this paragraph: In a similar fashion, viral therapy uses viruses to genetically modify diseased cells and tissues. Viral therapy shows promise as a method of gene therapy and in the treatment of cancer. Gene therapy is the insertion of genes into a person's cells and tissues to treat a disease. In the case of a genetic disease, the defective gene is replaced with a working gene. Although the technology is still new, it has been used with some success. Q: Which therapy uses viruses to genetically modify diseased cells and tissues? Choices: - chemotherapy - digestive therapy - oxygen therapy - viral therapy A:
Answer:
viral therapy