A baby's brain, central nervous system and digestive system are all immature as a newborn. (howtoadult.com)
This is because people who are immature in their communication styles aren't always able to see that you don't agree with their position. (empoweringparents.com)
Stem cells are immature blood cells and, in theory, introducing the gene into them should produce a permanent change in that individual's maturing blood cells. (newscientist.com)