Engineering Immunity (IMAGE) University of Southern California Caption Lentiviral delivery vectors must be engineered to target only specific cell type, as seen in A of the diagram. Once the engineered virus encounters HIV, it would inject itself and neutralize the virus. These neutralizing antibodies (B) would immunize the body against HIV over a person's lifetime. Credit USC Viterbi School of Engineering Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.