![](https://i0.wp.com/sitn.hms.harvard.edu/wp-content/uploads/2014/07/Sharaf-Figure-1.jpg?resize=870%2C773&ssl=1)
Part mouse, Part human
Let’s consider a virus like Human Immunodeficiency Virus (HIV). If we want to study it in a lab setting, we need an animal model, that is a living entity that we can infect and observe for a certain period of time. We cannot infect humans for obvious reasons. Monkeys and chimpanzees are expensive, and research on them subject to increasingly strict ethical guidelines. And the … Continue reading Part mouse, Part human