How Stem Cells Work
In the U.K., a shortage of human embryos in stem cell research has prompted some scientists to turn to "true hybrids" -- human-animal embryos created from an animal egg fertilized with human sperm. What can stem cells teach us about disease?
A stem cell is essentially the building block of the human body. The stem cells inside an embryo will eventually give rise to every cell, organ and… » Full Story on HowStuffWorks
A stem cell is essentially the building block of the human body. The stem cells inside an embryo will eventually give rise to every cell, organ and… » Full Story on HowStuffWorks
