The new immunotherapy works by disrupting a natural process by which the immune system becomes biased towards making one type of cell as it ages. The mouse study is an 'important" proof-of-concept, but it's currently difficult to gauge the significance of the findings, Dr. Janko. The authors injected the therapy into mice aged 18 to 24 months, or roughly the equivalent of being between 56 and 69 years old as a human. This means we can&