For the first time, scientists have bred mice with fully fledged human immune systems. The researchers say these human-like animals will enhance drug development.
When faced with an infection, these "humanized" mice produce immune cells that mimic the structure and diversity of the immune cells made by humans. When injected with a chemical that triggers widespread inflammation in the body, the mice develop a version of the autoimmune disease lupus that closely resembles that seen in humans, the researchers discovered.
