‘On’ switches for cells (Schier)

Researchers find early developmental signal hidden amid ‘noncoding’ RNA.

Wether human or animal, vertebrate or invertebrate, nearly every creature begins life as a tiny clump of cells. Before those cells can begin blossoming toward being a fully formed organism, however, they first must reorganize themselves into layers, each of which goes on to form complex structures such as internal organs, skin, muscle, and bone.