A STEM CELL FAIRYTALE
Once upon a time, there was an old adult stem cell who had three little stem cells, and not enough mitochondria to fuel them. So when they were mature enough, the grown up cell sent them out into the world to seek their fortunes. The first little stem cell was lazy. It didn't work at all, so it differentiated into a sedentary bone cell. The second little stem cell worked a bit harder, but still lazy - it transformed into a muscle cell. The third little stem cell worked hard all day, and became an intelligent brain cell. When stem cell research began far away and just as long ago, it's alluring potential - from providing insight to early human development, to eradicating permanent, fatal autoimmune diseases - was the stuff of fairytale. But [...]



