Your body is a masterpiece of coordinated perfection. Just think about that for a moment. Your body has innumerable processes and systems that all function according to a master plan, a set of instructions, a blueprint for your biology. What is it that tells your cells to perform the functions that they do? How do they know which organ or gland they belong to? How does a stem cell, that can differentiate into any cell at all, know exactly where to go and what type of cell to