Journalist and author Lise Barnéoud talks to Live Science about her book "Hidden Guests," which dives into the field of microchimerism and how it's transforming our knowledge of genetics, immunology and evolution.
Source: [Live Science](https://www.livescience.com/health/genetics/author-lise-barneoud-on-the-bizarre-and-provoking-world-of-microchimerism-when-cells-from-one-person-live-in-another-genetically-distinct-individual)