But when the 16-cell stage will begin to see changes in this small group of cells from the same cell, they used every starts there are some cells develop themselves differently.
But by the time 16 cells will begin to see changes in this small group of cells that had been the same in all cells, some cells began to develop themselves differently.
But when the distance 16 cells. Will start to see changes in the small cell. This from ever too every cells will begin to have some cells that develop differently.