Another encouraging aspect of AAV is its sheer natural diversity. By isolating different strains of the virus and then mixing and matching them in different ways, researchers have assembled a family of AAV vectors that can target cells in many different types of tissues. One strain of AAV might be best suited to deliver CRISPR to cells of the liver, while another might work best in the central nervous system, the lungs, the eyes, or the cardiac and skeletal muscles.
