This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Techniques in molecular biology, Subject name: Biochemistry
[{'content': "Which of the following is the most common gene delivery system for 'In-vivo' gene therapy? \nSelect and explain. \nA. Micro injection, B. Lipofection, C. Adeno viral vectors, D. Electroporation", 'role': 'user'}, {'content': "Answer: C \nExplanation: Adenovirus in gene therapy: ds DNA virus Replication deficient Used in In Vivo approach gene therapy As vaccines, For cancer therapy Advantages: Remain as an episome (extrachromosomal DNA) So doesn't integrate into the genome. (no chance of inseional mutagenesis) The maximum size of the inse by the adenoviral vector is 36 kb.", 'role': 'assistant'}]