What happens when you get new blood and new DNA from a complete stranger? This is the story of a woman whose own features began to change following a stem cell transplant.

Reporter: Eva Wiseman

Producer: Matt Russell

Sound design: Dominic Delargy

Artwork: Lola Williams

Editor: Jasper Corbett

Commissioning editor: Matt Russell

To find out more about The Observer:

Subscribe to TheObserver+ on Apple Podcasts for early access and ad-free content head to our website observer.co.uk 

Download the Tortoise app – for a listening experience curated by our journalists

If you want to get in touch with us directly about a story, or tell us more about the stories you want to hear about contact hello@tortoisemedia.com

Hosted on Acast. See acast.com/privacy for more information.