<prompt> Which of the following is the most common gene delivery system for In-vivo gene therapy?Micro injectionLipofectionAdeno viral vectorsElectroporation  <response>: 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 doesnt integrate into the genome. no chance of inseional mutagenesis The maximum size of the inse by the adenoviral vector is 36 kb. 