Divide and define: Clues to understanding how stem cells produce different kinds of cells
Sunday, May 5, 2013 - 12:00
in Biology & Nature
The human body contains trillions of cells, all derived from a single cell, or zygote, made by the fusion of an egg and a sperm. That single cell contains all the genetic information needed to develop into a human, and passes identical copies of that information to each new cell as it divides into the many diverse types of cells that make up a complex organism like a human being.