Now, not all of these cells actually are found next to capillaries. And that means not all cells in our body can actually directly obtain the nutrients they need from the body. And that's where these gap, from the capillaries and that's where these gap junctions actually come into play. Certain cells which are found far away from capillaries to cells in our bone and cells in our eye, for instance, basically depend on gap junctions to receive the proper nutrients such as glucose and nucleotides and amino acids in order to actually survive and function correctly. And the final function is embryological development. So things like differentiation and setting up the polarity of cells basically depends on the presence of gap junctions.