NCI.Red_White_Blood_cellsBryn Nelson follows leukemia patient Chris through an unusual stem cell transplant. Instead of receiving adult bone marrow, Chris was treated with umbilical cord blood. In this deeply compassionate, fully reported story for Mosaic, Bryn shows that the process isn’t easy, but holds promise. (Bonus: You’ll love the artwork.) Follow @SeattleBryn and image: National Cancer Institute