6-year-old saved by little sister’s bone marrow donation

A 6-year-old Brooklyn boy is alive and recovering, thanks to his little sister who donated bone marrow for a transplant. 
Henry MacDowell, who loves Legos and Star Wars, was diagnosed a few years ago with severe congenital neutropenia – a rare and potentially deadly genetic condition. Experts say it affects less than one in 1 million people in the United States. 
The only cure for the condition is a bone marrow transplant. Luckily, his 2-year-old sister, Maggie, was a perfect match. 
About a month ago, doctors extracted bone marrow from Maggie's hips, and slowly transplanted it into Henry.
The family say he is getting stronger every day, but his recovery is not yet complete. 
Henry had some nice things to say to News 12 about his little sister: 
"She's actually pretty fun. It's fun having her around."